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IBM Engineer's Notebook Number 82078-01

Referenced:
IBM  Search this
Maker:
IBM  Search this
Measurements:
overall: 30 cm x 24.2 cm x 1.3 cm; 11 13/16 in x 9 1/2 in x 1/2 in
Object Name:
Notebook
Date made:
1953-04-24
From 24 April 1953 to 14 June 1954
1953-04-24 to 1954-06-14
Credit Line:
Gift of William Y. Crook
ID Number:
1998.3076.01
Nonaccession number:
1998.3076
Catalog number:
1998.3076.01
See more items in:
Medicine and Science: Computers
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746a0-e8bd-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_214399

"Engineers' Notebook," authored by William Harrison

Collection Creator:
Baer, Ralph H., 1922-2014  Search this
Container:
Box 7, Folder 4
Type:
Archival materials
Date:
1966 September 11-1967 October 5
Collection Restrictions:
The collection is open for research use. Gloves must be worn when handling unprotected photographs and negatives.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions. Copyright held by the Smithsonian Institution.
Collection Citation:
Ralph H. Baer Papers, 1943-2015, Archives Center, National Museum of American History, Smithsonian Institution.
See more items in:
Ralph H. Baer Papers
Ralph H. Baer Papers / Series 4: Television Game Documents / 4.3: Notebooks
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8fcd7cc05-dbe2-4721-9616-27ebcf575a1e
EDAN-URL:
ead_component:sova-nmah-ac-0854-ref193

"Sanders Associates Engineering Notebook," authored by William Rusch

Collection Creator:
Baer, Ralph H., 1922-2014  Search this
Container:
Box 7, Folder 1
Type:
Archival materials
Date:
1966 October-1967 October
Collection Restrictions:
The collection is open for research use. Gloves must be worn when handling unprotected photographs and negatives.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions. Copyright held by the Smithsonian Institution.
Collection Citation:
Ralph H. Baer Papers, 1943-2015, Archives Center, National Museum of American History, Smithsonian Institution.
See more items in:
Ralph H. Baer Papers
Ralph H. Baer Papers / Series 4: Television Game Documents / 4.3: Notebooks
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep85ac53e79-ac8a-4ce6-a865-d52da64dfc22
EDAN-URL:
ead_component:sova-nmah-ac-0854-ref190

"Sanders Associates Engineering Notebook," authored by William Rusch

Collection Creator:
Baer, Ralph H., 1922-2014  Search this
Container:
Box 7, Folder 2
Type:
Archival materials
Date:
1967 October-November
Collection Restrictions:
The collection is open for research use. Gloves must be worn when handling unprotected photographs and negatives.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions. Copyright held by the Smithsonian Institution.
Collection Citation:
Ralph H. Baer Papers, 1943-2015, Archives Center, National Museum of American History, Smithsonian Institution.
See more items in:
Ralph H. Baer Papers
Ralph H. Baer Papers / Series 4: Television Game Documents / 4.3: Notebooks
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8751cae96-ce69-41a8-ab31-d79c107ed867
EDAN-URL:
ead_component:sova-nmah-ac-0854-ref191

"Sanders Associates Engineering Notebook," authored by William Rusch

Collection Creator:
Baer, Ralph H., 1922-2014  Search this
Container:
Box 7, Folder 3
Type:
Archival materials
Date:
1967 November-1968 March
Collection Restrictions:
The collection is open for research use. Gloves must be worn when handling unprotected photographs and negatives.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions. Copyright held by the Smithsonian Institution.
Collection Citation:
Ralph H. Baer Papers, 1943-2015, Archives Center, National Museum of American History, Smithsonian Institution.
See more items in:
Ralph H. Baer Papers
Ralph H. Baer Papers / Series 4: Television Game Documents / 4.3: Notebooks
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep831de36d8-ad01-4800-baf5-29b702e7315e
EDAN-URL:
ead_component:sova-nmah-ac-0854-ref192

Engineering notebook (N. Mohammedi)

Collection Inventor:
Del Mar, Bruce E., 1913-  Search this
Container:
Box 5, Folder 8
Type:
Archival materials
Text
Date:
1974 September-1975 September
Collection Restrictions:
Collection is open for research but is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
Del Mar Avionics Holter Monitor Records, dates, Archives Center, National Museum of American History
See more items in:
Del Mar Avionics Holter Monitor Records
Del Mar Avionics Holter Monitor Records / Series 6: Holter Monitor / 6.2: Model 445
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep82d9f2055-2efa-4c98-9418-07785215cddd
EDAN-URL:
ead_component:sova-nmah-ac-1249-ref116

Engineering notebook (Ray Cherry)

Collection Inventor:
Del Mar, Bruce E., 1913-  Search this
Container:
Box 6, Folder 6
Type:
Archival materials
Text
Date:
1973 July-1978 June
Collection Restrictions:
Collection is open for research but is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
Del Mar Avionics Holter Monitor Records, dates, Archives Center, National Museum of American History
See more items in:
Del Mar Avionics Holter Monitor Records
Del Mar Avionics Holter Monitor Records / Series 6: Holter Monitor / 6.3: Model 660
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8e328bd87-0903-403a-ac6f-6d7c5e46ed98
EDAN-URL:
ead_component:sova-nmah-ac-1249-ref126

Engineering notebook (D. Anderson)

Collection Inventor:
Del Mar, Bruce E., 1913-  Search this
Container:
Box 5, Folder 8
Type:
Archival materials
Date:
1974 October-1978 March
Collection Restrictions:
Collection is open for research but is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
Del Mar Avionics Holter Monitor Records, dates, Archives Center, National Museum of American History
See more items in:
Del Mar Avionics Holter Monitor Records
Del Mar Avionics Holter Monitor Records / Series 6: Holter Monitor / 6.2: Model 445
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep86d98f938-ba3a-4cdb-b95c-96a818904818
EDAN-URL:
ead_component:sova-nmah-ac-1249-ref115

Bartram Kelley Diaries

Creator:
Kelley, Bartnam, 1909-1998  Search this
Names:
Bell Helicopter Company  Search this
Extent:
2.7 Cubic feet ((6 boxes))
Type:
Collection descriptions
Archival materials
Diaries
Date:
bulk 1941-1980
Scope and Contents:
This collection consists of 47 diaries/engineering notebooks, containing highly detailed information and data relating to the design and development of the Bell Model 30 (which became the Model 47), the UH-1 Huey and the 206 JetRanger series, among other craft.
Biographical / Historical:
Bartram "Bart" Kelley (1909-1998) was a pioneering and distinguished helicopter engineer whose career was spent working for the Bell Aircraft and Bell Helicopter companies. Hired by Arthur M. Young, Kelley was instrumental in the design, testing, and development of such Bell aircraft as the H-13 Sioux, UH-1 Iroquois, AH-1G Cobra, OH-58 Kiowa, and XV-15. He became chief engineer of Bell's helicopter division in the late 1940s. After retirement in 1975, he served as a consultant for Bell Helicopter Textron. Bart Kelley was a fellow of the Helicopter Society, the American Institute of Aeronautics, the Royal Aeronautical Society, and the Society of Aeronautical Engineers. He was inducted into the United States Army Aviation Hall of Fame in 1994.
Provenance:
Dorothea N. Kelley, Gift, 2011
Restrictions:
No restrictions on access.
Rights:
Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please submit an Application for Permission to Reproduce NASM Material, available at Permissions Requests
Topic:
Helicopters  Search this
Aeronautics  Search this
Bell 206A Jetranger  Search this
Bell UH-1 Iroquois (Huey) Series  Search this
Bell 30 Series  Search this
Bell 47  Search this
Genre/Form:
Diaries -- 20th century
Citation:
Bartram Kelley Diaries, Accession 2001-0057, National Air and Space Museum, Smithsonian Institution.
Identifier:
NASM.2001.0057
Archival Repository:
National Air and Space Museum Archives
GUID:
https://n2t.net/ark:/65665/pg2a4e6cb9f-33cc-491e-a6e7-5fa39dd32bec
EDAN-URL:
ead_collection:sova-nasm-2001-0057

Del Mar Avionics Holter Monitor Records

Inventor:
Del Mar, Bruce E., 1913-  Search this
Former owner:
Del Mar Avionics Corporation  Search this
Extent:
3 Cubic feet (8 boxes)
Type:
Collection descriptions
Archival materials
Correspondence
Date:
1951-2011
Summary:
Collection documents the development of the Holter Monitor, a portable device for continuously monitoring heart activity for an extended period, through engineering logbooks, drawings, operator manuals, correspondence, photographs, sales brochures and catalogs, biographical information about the engineering staff who worked on the monitor, patents and trademarks, and marketing and sales materials.
Scope and Contents:
The collection includes engineering logbooks, drawings, operator manuals, correspondence, photographs, sales brochures and catalogs, biographical information about the engineering staff who worked on the monitor, patents and trademarks, and marketing and sales materials documenting the development of the Holter Monitor, a portable device for continuously monitoring heart activity.

The records document the successful collaboration of an independent inventor and a manufacturing firm to identify problems, develop solutions and bring to market diagnostic technologies. Bruce Del Mar's role as an innovator and collaborator with Holter is especially important, because Del Mar's work spurred the development of an entire diagnostic industry. In addition, the records also chronicle how "Holter technology" was affected by progressive technological innovations in the industry, as vacuum tubes were replaced by transistors, as microprocessors gave way to microchips and circuit boards, and as analog recordings were replaced by digital formats.

Documenting manufacturing developments (highs and lows) and marketing considerations is an important element in better understanding the invention process. Del Mar Avionics was the first to design and manufacture instrumentation for long-term monitoring of the human heart for the medical profession. Today, Holter Monitors continue to be an important diagnostic tool for monitoring the health of the heart.

Series 1, Historical Background, 1951-2010 and undated, consists of biographical materials for Bruce Del Mar, founder of Del Mar Avionics, company histories, copies of the Del Mar Avionics newsletter Pacemaker, employee information, newspaper clippings and ephemera, and photographs of some employees. The employee information contains a 1979 handbook, explaining company policies and the benefits of employment with Del Mar Avionics and a 1951 memo detailing overtime working hours for women, presumably from Douglas Aircraft, where Bruce Del Mar was employed.

Series 2, Del Mar Avionics Engineering, 1958-1976, is divided into three subseries, Subseries 1, Correspondence, 1965-1976; Subseries 2, Reports, 1964-1969; and Subseries 3, Drawings, 1958-1968. The documentation consists primarily of correspondence from the engineering department, 1965 to 1976, related to the development, design, budgeting, testing, and marketing of the Holter Monitor. The majority of the documentation is correspondence and is written by engineering staff members, but also included are quotation requests, trip reports, and technical reports. Correspondence between Holter and Del Mar about the development of the Holter Minotor is in Series 6. The drawings, 1958-1968, include six drawings (22" x 34" or smaller) for Avionics Research Products projects (panel assembly, chassis assembly, and battery chargers for model 602), and Electromation Company (degausser single coil).

Series 3, Patents and Trademarks, 1965-2002 and undated, consists of copies of patents by Norman J. Holter, W.E. Mills, and W.E. Thornton, Cliff Sanctuary. and Isaac Raymond Cherry related to the development of the Holter Monitor. Also included are lists of United States patents issued to Del Mar Avionics employees, as well as lists of registered trademarks and activities for Del Mar Avionics and copies of trademarks issued to the company.

Series 4, Product Literature, 1968-2010 and undated, consists of product literature for Del Mar Avionics products and some of its competitors. The product literature for Del Mar Avionics is arranged chronologically by model number, and the competitor literature is arranged alphabetically. All of the product literature is related to medical instrumentation with the exception of the Hydra Set, a precision load positioner which is the only product Del Mar Avionics sells today.

Series 5, Sales, 1967-1985, consists of price lists, price catalogs (both domestic and international) and sales objectives for medical instrumentation sold by Del Mar Avionics.

Series 6, Holter Monitor Materials, 1958-2005 and undated, is divided into three subseries, Subseries 1, Background Materials, 1958-2005 and undated; Subseries 2, Model 445, 1974-1978; and Subseries 3, Model 660, 1967-1978 and undated, and consists of materials documenting the relationship between Norman J. Holter, an inventor, and Del Mar Avionics.

Holter and Wilford R. Glassock were issued United States Patent 3,215,136 on November 2, 1965 for the Electrocardiographic Means. Dr. Eliot Corday introduced Holter to Bruce Del Mar, founder of the Del Mar Avionics Corporation in Irvine, California. Del Mar engineers developed the "electrocardiocorder" for clinical use, producing a commercially viable monitor which came to be known as the Holter Monitor Test. Further refinements led to the creation of a "minimonitor" in 1968 which was described by Holter as being the "size of a cigarette package." Commercial production of the Holter minimonitor, AVSEP, Jr., began in 1969. The Holter Research Foundation ultimately sold exclusive rights to their patents to Del Mar Engineering Laboratories.

The materials include biographical materials about Norman J. Holter, journal articles about the Holter Monitor, correspondence, engineering notebooks, a licensing agreement, product literature, reports, price lists, catalogs, operating manuals and specific information about the Dynamic Del Mar Avionics ElectroCardioCorder (Model 445), 1977, and the ElectroCardioScanner (Model 660), 1971. Both models were developed by Del Mar's medical device manufacturing staff. The licensing agreement and correspondence detail in chronological order the relationship between Norman Holter and Del Mar Avionics, specifically president Bruce Del Mar, in the rapid commercial marketing and development of Holter's electrocardiorecorder. Although Holter assigned exclusive rights to his patent to Del Mar Avionics, he was involved in the design and development process, albeit from a distance. The engineering staff at Del Mar kept Holter informed, and it is clear that Holter regularly visited the company.

The engineering notebooks relate to the models 445 and 660. The notebooks were maintained by engineering staff members D. Anderson, N. Mohammedi, Ray Cherry and Fike. The notebooks are handwritten, although in some instances memos and other information have been inserted. For example, N. Mohammedi's notebook documenting Model 445 contains black-and-white prints, magnetic tape samples, and recorder tape (EKG graph paper) samples with data from the monitor. The notebooks are bound and paginated, and individual pages are stamped sequentially.

Series 7, Slides, circa 1990s, consists of color slides used for presentations by Del Mar Avionics staff to discuss and promote the marketing of the Holter Monitor.
Arrangement:
The collection is arranged into seven series.

Series 1, Historical Background, 1951-2010 and undated

Series 2, Del Mar Avionics Engineering, 1958-1976

Subseries 1, Correspondence, 1965-1976

Subseries 2, Reports, 1964-1969

Subseries 3, Drawings, 1958-1968

Series 3, Patents and Trademarks, 1965-2002 and undated

Series 4, Product Literature, 1968-2010 and undated

Subseries 1, Del Mar Avionics, 1968-2010 and undated

Subseries 2, Competitors, 1974 and undated

Series 5, Sales, 1967-1985

Series 6, Holter Monitor Materials, 1958-2005

Subseries 1, Background Materials, 1958-2005

Subseries 2, Model 445, 1974-1978

Subseries 3, Model 660, 1967-1978 and undated

Series 7, Slides, circa 1990s
Biographical / Historical:
Norman Jefferis "Jeff" Holter (1914-1983) was born in Helena, Montana, to a prominent Montana pioneering family. After attending public schools in Helena, he earned master's degrees in chemistry from the University of Southern California (1938) and physics from the University of California, Los Angeles (1940). During these years Holter also organized Applied Micro Sciences, a scientific photography business, and began working with Dr. Joseph A. Gengerelli of UCLA on nerve stimulation in frogs and brain stimulation in rats. Holter's interest in studying electrical activity in humans in their daily activities without touching them, spawned his lifelong pursuit to develop the Holter Monitor.

During World War Two, Holter served as a senior physicist for the U.S. Navy's Bureau of Ships, conducting research into the behavior of ocean waves in preparation for wartime amphibious operations. After the war, in 1946, Holter headed a staff of oceanographic engineers at Bikini Atoll during Operation Crossroads, the first postwar atomic bomb tests, measuring wave actions and underwater disturbances caused by the explosions.

Because of demands of his family's business affairs, Holter returned to Helena in 1947 to continue his research activities. In 1947 he formed the Holter Research Foundation, with a laboratory originally located in the rear of the Holter Hardware Company building. From 1956 to 1971 the laboratory facilities were located in the Great Northern Railroad depot building in Helena. The foundation was initially funded by Holter and other members of his family, but in 1952 Holter began to receive grants from the National Institutes of Health (NIH).

Holter continued his collaboration with Dr. Gengerelli of UCLA in attempting to transmit information, primarily brain waves, by radio. Holter turned his attention from the brain to the heart because the heart's greater voltage made the electronics easier, and because heart disease was far more prevalent than cerebral disease. Holter's introduction to Dr. Paul Dudley White (1886-1973), a renowned physician and cardiologist, helped convince him to focus his research on recording electrical activity from the heart. Holter's goal was to radio broadcast and record the more obvious electrophysiological phenomena occurring in humans while carrying on their normal activities, rather than having to lie quietly on a couch.

The first broadcast of a radioelectrocardiogram (RECG) took place circa 1947 and required eighty to eighty-five pounds of equipment, which Holter worn on his back while riding a stationary bicycle. This was not practical and in no way could be worn by a patient. The initial transmitter and receiver required that the subject remain in the general area of the laboratory, so a portable and lighter RECG receiver-recorder had to be developed.

Next, Holter created a briefcase-like device that could be carried by a patient. By using very thin magnetic recording tape, twenty-four hours of RECG could be captured on a reel five inches in diameter. The initial method of examining the voluminous records from the tape recordings developed by Holter was called Audio-Visual Superimposed ECG Presentation (AVSEP). AVSEP made it possible to examine twenty-four hours of RECGs in twenty minutes, with signals being presented visually on an oscilloscope and audibly through a speaker.

With the development of transistors, radioelectrocardiography was made obsolete, and it became possible for the amplifier, tape recorder, temperature-control circuits, motor speed control circuits, and batteries to be placed in a single unit small enough for a coat pocket or purse. In 1952, Holter succeeded in creating a small unit that weighed 1 kilogram. Wilford R. Glassock, a senior engineer working with Holter, traveled to Cedars of Lebanon Hospital (now Cedars-Sinai Hospital of Los Angeles) in 1962 to demonstrate the Holter monitor system and discuss making it more practical. At Cedars, Dr. Eliot Corday observed the practicality of the system and not only embraced the technology, but collaborated with Holter's team and was an early promoter of the technology to both industry and physicians. Holter and Glassock were issued US Patent 3,215,136 on November 2, 1965 for the Electrocardiographic Means.

As articles describing the foundation's invention of these devices began to appear in the professional literature, there was considerable demand from doctors and hospitals for the equipment. Dr. Corday introduced Holter to Bruce Del Mar, founder of the Del Mar Avionics Corporation in Irvine, California. Del Mar engineers developed the "electrocardiocorder" for clinical use, producing a commercially viable monitor which came to be known as the Holter Monitor Test. Further refinements led to the creation of a "minimonitor" in 1968, which was described by Holter as being the "size of a cigarette package." Commercial production of the Holter minimonitor, AVSEP, Jr., began in 1969. The Holter Research Foundation ultimately sold exclusive rights to their patents to Del Mar Engineering Laboratories.

Later known as Del Mar Avionics, a team of engineers diverted their attention from successful manufacturing of military weapons training devices to focus on improving the speed and accuracy of computerized ECG analysis and they became the acknowledged leader in Holter monitoring technology for over 40 years. In 1969, because of the increased amount of required paper work and red tape, Holter canceled the grant funding his foundation had been receiving from NIH. He was also in constant conflict with the Internal Revenue Service over the foundation's non-profit status, rights to patents, and commercial production of equipment. The foundation continued to maintain a laboratory and conduct varied scientific work, but on a much smaller scale. The Holter Research Foundation, Inc. was dissolved in 1985, two years after Holter's death.

Del Mar Avionics was founded on January 9, 1952, as Del Mar Engineering Laboratories in Los Angeles, California by Bruce Del Mar, who led the development of aircraft cabin pressurization systems. Del Mar was born in Pasadena, California in 1913. An engineer, inventor, entrepreneur and businessman, Del Mar graduated from the University of California, Berkeley (1937) with a Bachelor of Science degree. Del Mar worked for Douglas Aircraft (1933-1951) as a research engineer on many projects before founding Del Mar Engineering Laboratories. In 1938, Del Mar married Mary Van Ness. The couple had two daughters, Patrica Jean Parsons and Marna Belle Schnabel.

In 1958, Del Mar formed a wholly-owned subsidiary, Electromation Inc., which manufactured tape recording and communication equipment. He later established, Aeroplastics Corporation to manufacture plastic products and Avionics Research Products Corporation to develop and produce biomedical instrumentation. By the mid-1960s, the company had become a leading U.S. Defense Department prime contractor in the development and production of aerial tow target systems for weapons training and instrumented ground targets for scoring air-to-ground automatic weapons delivery. It also produced helicopter target drones and helicopter flight trainers for the U.S. Army.

In 1961, the company entered the growing medical instrumentation market with the development of the first long-term ambulatory monitoring systems.

In 1965, the company introduced the Hydra Set Load Positioner that controls the precise vertical positioning of loads up to 300 tons (272,000 kg) in increments as small as 0.001 inch (0.025mm). This unique product, mounted between the load and the crane (or hoist), permits precise mating and de-mating of critical components, thus eliminating unforeseen damage to valuable loads. Hydra Set Load Positioners are in use worldwide in the aerospace, military/commercial aviation, nuclear and fossil fuel power generating industries and in various industrial applications. In 1975, the company, then re-named Del Mar Avionics, moved to its current location in Irvine, California.
Related Materials:
Materials in the Archives Center

Project Bionics Artificial Organ Documentation Collection [videotapes], 2002 (AC0841) documents the invention and development of artificial internal organs through oral history interviews with scientists and others involved.

The James A. E. Halkett and Sigmund A. Wesolowski, M.D., Papers, 1948-1951 (AC0200) documents Halkett and Wesolowski's experiments on an early mechanical heart. Halkett and Wesolow(ski) materials show the process of technological innovation through laboratory protocols.

The George Edward Burch Papers, 1984-1986 (AC0316) documents Burch's pioneering work in clinical cardiology and research through technical notes, diagrams, and correspondence regarding laboratory work on the "2-pump heart model," 1984-1986.

Wilson Greatbatch Innovative Lives Presentation, 1996 (AC0601) documents the invention of the implantable cardiac pacemaker in 1958.

The Ronald J. Leonard Papers, circa 1980-1997 (AC1109) documents Leonard's development of pumps and oxygenators used in cardio-pulmonary bypass surgery.

Materials in the Division of Medicine and Science, National Museum of American History

The Division of Medicine and Science (now Division of Medicine and Science) holds two monitors: the Dynamic and the Del Mar Avionics ElectroCardioCorder (Model 445), 1977 and the ElectroCardioScanner (Model 660), 1971. Both were developed by Del Mar's Medical Device Manufacturing staff. See accession #: 2011.0196.

Materials at the Montana Historical Society Research Center, Archives

Holter Family papers, 1861-1968

Includes documentation about the Holter Research Foundation, Inc.

Holter Research Foundation, Inc. records, 1914-1985

The Holter Research Foundation, Inc. was a private, non-profit, scientific research foundation started in Helena, Montana, in 1947 by Norman J. "Jeff" Holter. Records (1914-1985) include correspondence, financial records, laboratory records, subject files, photographs, etc. Also included are subgroups for N.J. Holter; his work in the U.S. Navy on bombs and waves; his work as assistant chancellor at University of California, San Diego; and the Society of Nuclear Medicine.
Provenance:
The collection was donated by Del Mar Avionics through Bruce Del Mar, President on September 12, 2011.
Restrictions:
Collection is open for research but is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Topic:
Medical innovations  Search this
Patents  Search this
Medical instruments and apparatus  Search this
Genre/Form:
Correspondence
Citation:
Del Mar Avionics Holter Monitor Records, dates, Archives Center, National Museum of American History
Identifier:
NMAH.AC.1249
See more items in:
Del Mar Avionics Holter Monitor Records
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep817067f09-60ab-459a-919f-0ef2a3d6da5b
EDAN-URL:
ead_collection:sova-nmah-ac-1249
Online Media:

Edward P. Baldwin Collection

Creator:
Baldwin, Edward P.  Search this
Names:
Lockheed Aircraft Corp  Search this
Extent:
7.31 Cubic feet ((29 boxes))
Type:
Collection descriptions
Archival materials
Drawings
Photographs
Logs (records)
Manuals
Newspaper clippings
Date:
bulk 1944-1982
Scope and Contents:
This collection consists of 7.31 cubic feet of material created by Edward Baldwin during his tenure as a engineer for Kelly Johnson at Lockheed Skunk Works, 1944-1982. The collection consists of original pencil on vellum Skunk Works drawings, blueprints, design studies, logs, engineering notebooks, photographs, technical manuals, correspondence, newspaper articles and newsletters relating to his work on Lockheed aircraft, including the development of the P-80, SR-71, F-94, F-104, F-117 and the U-2.
Biographical / Historical:
Edward Baldwin received his degree in Mechanical Engineering in 1940 from West Virginia University. After graduation he moved to California and began working at Lockheed Aircraft Corporation. He was first assigned to the Special Airplane Projects group, where he worked on the Model 10 Electra, Model 12 Electra Jr, Model B-14, Hudson Bomber and the Model 18 Lodestar. Baldwin was then placed on loan to the P-38 and R6-O Constitution projects. In March of 1944, Baldwin was asked by Dick Boehme to join the Fuselage Design Group of the Advanced Development Projects (ADP) "Skunk Works." Baldwin worked on the P-80, before working on the F-94C and the XF-104. In November of 1954, Baldwin was placed on the U-2 project, where he developed the configuration of the aircraft and completed the design. Baldwin also worked on the ADP's Archangel Program to develop a Mach 3+ reconnaissance aircraft, which became known as the SR-71. Baldwin was then assigned to the "Have Blue" program, which was the Skunk Work's entry into the Stealth Prototype competition. Baldwin was responsible for all structural design of the two test vehicles and when Lockheed won the contract, became the Deputy Program Manager for Structures of the F-117. He retired in September 1982, after the first four production F-117 aircraft were delivered to the Air Force.
Provenance:
Barbara Sulier and Robert Baldwin, Gift, 2016
Restrictions:
No restrictions on access.
Rights:
Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please submit an Application for Permission to Reproduce NASM Material, available at Permissions Requests
Topic:
Lockheed (F-80) P-80A Shooting Star  Search this
Lockheed U-2 Family  Search this
Lockheed SR-71 (Blackbird) Family  Search this
Lockheed F-117A Nighthawk (Stealth Fighter)  Search this
Lockheed F-104 Starfighter Family  Search this
Lockheed F-94 Starfire Family  Search this
Aeronautics  Search this
Aircraft drafting  Search this
Genre/Form:
Drawings
Photographs
Logs (records)
Manuals
Newspaper clippings
Citation:
Edward P. Baldwin Collection, Accession 2017-0010, National Air and Space Museum, Smithsonian Institution.
Identifier:
NASM.2017.0010
Archival Repository:
National Air and Space Museum Archives
GUID:
https://n2t.net/ark:/65665/pg20ffa80dc-0f03-4c4b-89cc-113bfadfe445
EDAN-URL:
ead_collection:sova-nasm-2017-0010

Charles Richardson Pratt Papers

Creator:
Pratt, Charles Richardson, 1860-1935  Search this
Collector:
National Museum of American History (U.S.). Division of History of Technology  Search this
National Museum of American History (U.S.). Division of Mechanical and Civil Engineering  Search this
National Museum of American History (U.S.). Division of Work and Industry  Search this
Names:
Sprague, Frank J.  Search this
Extent:
6 Cubic feet (13 boxes, 8 oversize folders)
Type:
Collection descriptions
Archival materials
Diaries
Drawings
Trade catalogs
Photographs
Notebooks
Letterpress books
Patents
Place:
Montclair (N.J.)
Date:
1860-1935
bulk 1910-1924
Summary:
The papers document the professional career of mechanical engineer, Charles Richardson Pratt. The papers include correspondence, patents, patent application materials, agreements, photographs, publications, and blueprints for many of Pratt's inventions, especially his work on elevators.
Scope and Contents:
These papers contain personal materials of Charles R. Pratt; letterpress copybooks; engineering notebooks; diaries; material relating to the development of the heavy-duty, high-rise electric elevator; material concerning elevator cable equalizers and safety devices, Morton-Jacobsen and other lathe chucks, lathe drives and the Pratt Driver, the hydraulic transmission of power in trucks, and ship steering gear; and studies reports, drawings, photographs, catalogs, and trade literature concerning mechanical engineering.
Arrangement:
The collection is arranged into eight series.

Series 1: Personal Materials, 1875-1935

Series 2: Diaries, 1894, 1928-1931

Series 3: Correspondence, 1872-1920

Series 4: Notebooks, 1880, 1889, 1900

Series 5: Inventions, 1860-1927

Series 6: Photographs, 1890-1902

Series 7: Publications, 1895-1929

Series 8: Drawings, 1878-1929
Biographical / Historical:
Charles Richardson Pratt (1860-1935), was born in Massachusetts to John C. and Mary Anne Richardson. He graduated from the Hopkins School of Boston and the Massachusetts Institute of Technology in 1879. Pratt worked at Whittier Machine Company of Boston (1882-1890) where he designed and built the first electric elevator in 1888. The elevator was installed in the Tremont House, Boston. Pratt also worked as an agent and later as a consulting engineer for the Otis Elevator Company, the inventors of the hydraulic elevator.

Pratt was best known for his development of the first electrically powered elevator. In 1892, inventor Frank Sprague (1857-1934) founded the Sprague Electric Elevator Company, and with Charles R. Pratt developed the Sprague-Pratt Electric Elevator. They demonstrated that electrically powered elevators were capable of competing with hydraulic elevators. Pratt held several engineering positions and worked for the Marine Engine Company of Newark, New Jersey (1902-1905) developing elevator systems; consulting engineer to the Universal Speed Control Company of New York City (1906-1919); consultant to the American Engineering Company of Philadelphia (1912); mechanical superintendent at the Crocker Wheel Company of Ampere, New Jersey (1919); engineer for the E. Horton and Sons Company of Connecticut (1920-1923); the General Tractors Corporation (1924-1927); and was associated with the Watson Elevator Company of New York City (1928-1930). Pratt patented many of his ideas, earning over thirty-five patents related mostly to elevators,

Pratt was a member of the Masons, the Sons of the American Revolution, the American Society of Mechanical Engineers, the MIT Club of New Jersey, and the Motor Club of London. He married Mary Byron Ladd and they had two children, Gertrude Ladd Pratt and Donald Richardson Pratt.
Provenance:
This collection was purchased from Charles R. Pratt's daughter, Gertrude Pratt Vance, in 1973.
Restrictions:
Collection is open for research.
Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Topic:
Mechanical engineering and engineers  Search this
Inventors  Search this
Elevators  Search this
Machine-tools  Search this
Patents -- 1890-1900  Search this
Power transmission  Search this
Genre/Form:
Diaries
Drawings
Trade catalogs
Photographs -- 19th century
Notebooks
Letterpress books
Patents -- 1870-1880
Citation:
Charles Richardson Pratt Papers, 1860-1935, Archives Center, National Museum of American History.
Identifier:
NMAH.AC.0958
See more items in:
Charles Richardson Pratt Papers
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep82afc1e29-876b-4494-9c92-64a14390613e
EDAN-URL:
ead_collection:sova-nmah-ac-0958
Online Media:

William R. Hutton Papers

Creator:
Hutton, William R., 1826-1901  Search this
Extent:
30 Cubic feet (33 boxes, 21 oversize folders)
Type:
Collection descriptions
Archival materials
Photographs
Letterpress copybooks
Blueprints
Diaries
Drawings
Cashbooks
Business records
Business letters
Notebooks
Topographic maps
Tax records
Technical drawings
Stock certificates
Technical literature
Photoengravings
Notes
Maps
Microfilms
Linen tracings
Letter books
Letters
Land titles
Legal documents
Sketches
Salted paper prints
Reports
Receipts
Plans (drawings)
Photostats
Photographic prints
Architectural drawings
Administrative records
Albumen prints
Albums
Annual reports
Booklets
Account books
Books
Family papers
Financial records
Cyanotypes
Correspondence
Deeds
Printed material
Contracts
Harlem river bridge
Photograph albums
Specifications
Christmas cards
Menus
Place:
France
Maryland
Chesapeake and Ohio Canal
Panama Canal (Panama)
New Jersey
New York (N.Y.)
Hudson River
Baltimore (Md.)
Georgetown (Washington, D.C.)
New York
Washington Bridge
New Croton Aqueduct
Kanawha River Canal
Washington Aqueduct
Potomac River -- 19th century
Washington Memorial Bridge
Hudson River Tunnel
Date:
1830-1965
Summary:
The papers document the life and work of William R. Hutton, a civil engineer during the late 1800s to the early 1900s. Materials include diaries, notebooks, correspondence, letterpress copy book, printed materials, publications, specifications, photographs, drawings, and maps that document the construction of several architectural and engineering projects during this period. Most notable are the records containing information related to the construction of the Chesapeake and Ohio Canal, Hudson River Tunnel, the Washington Aqueduct, the Kanawha River Canal, and the Washington/Harlem River Bridge. There are also several records about railroads in the state of Maryland, the District of Columbia and elsewhere, including the Western Maryland Railroad, Baltimore and Ohio Railroad, Colorado Midlands Railway, Baltimore and Drum Point Railroad, the Northern Adirondack Railroad, and the Pittsfield and Williamstown Railroad. The records can be used to track the progression of these projects, and engineering innovation during the late 1800s to the early 1900s.
Scope and Contents:
These papers document William R. Hutton's professional career as a civil engineer and his personal affairs. Although the personal materials in the collection provide insight into a man and a family that have been largely forgotten by biographers, it is the professional materials that are perhaps the most interesting to researchers. They provide a compelling narrative of the push to the West that occurred in 19th century America and the internal improvements movement typified by the American System plan proposed by Henry Clay. Perhaps best remembered for the high tariffs that accompanied it, the American System plan was also concerned with the advancement of internal improvements, such as canals, that would unite the East and West in communication, travel, and trade. The Chesapeake and Ohio Canal can be seen as one of the products of this movement (1) and was in fact initially heralded as the first great work of national improvement (2).

The papers in this collection that are related to the construction and maintenance of the Chesapeake and Ohio Canal are an invaluable documentation of efforts during this turbulent time to unite the eastern and western United States. They provide details of the canal from its initial construction to its decline with the incline at Georgetown project. The canal also serves as an example, or perhaps a warning against, federal involvement in state improvement efforts as it was the first project to be directly funded and staffed by the federal government (3). The groundbreaking ceremony was attended by then President John Quincy Adams whose toast, "to the canal: perseverance," (4) became an ironic omen, as construction of the canal took over twenty-two years to be completed. The Chesapeake and Ohio Canal materials can be used as a case study for the problems encountered during canal building (5). These problems are best typified in the collection by the papers relating to the Georgetown incline. This project was headed by Hutton and was plagued with construction problems, boating accidents, and obsolescence from the moment of its completion. Despite these issues, the Chesapeake and Ohio Canal remains a structure of historical significance in America. As the third and last effort to construct an all-water route to the West (6), the Chesapeake and Ohio Canal is an important artifact of 19th century attitudes and efforts towards commerce, trade, travel, and communication between the eastern and western United States. Other significant canals and water structures represented in the collection are the Kanawha Canal, the Washington Aqueduct, and a large collection of materials relating to the Kingston Water Supply (New York).

One of the most significant internal improvements made during this time was the railroad. The legal conflicts that arose between the canal companies and railroads is also represented in the materials relating to the Chesapeake and Ohio Canal. These materials specifically deal with the legal conflict's between the Chesapeake and Ohio Canal and the Baltimore and Ohio Railroad. The development and construction of the railroads is also represented in the materials documenting the Baltimore and Ohio Railroad, the Baltimore and Drum Point Railroad, the Northern Adirondack Railroad, the Western Maryland Railroad, the Mexican National Railroad, the Colorado Midlands Railroad, and the Columbia Railroad.

The collection also demonstrates the spirit of innovation and invention that was prevalent in the engineering field in the nineteenth century. Joseph Gies writes, "...one of the distinctive characteristics of the great nineteenth century engineering adventurers was their readiness to gamble on the translation of theory into practice" (7). In this quote, he is speaking of the civil engineer Dewitt Clinton Haskins and a project that truly encapsulates engineering invention in the nineteenth century, the Hudson River Tunnel. Responding to the increase in the population of the City of New York in the late nineteenth century from sixty thousand to three and a half million, the Hudson River Tunnel was originally devised as a way to alleviate traffic and to transport train passengers directly across the Hudson River (8). Beginning with records dating from 1881 to 1901, the Hutton papers can be used to document not only the advances in engineering during this time but also the costs of progress. Haskins' initial efforts to build the tunnel using submerged air pressurized caissons were marked by failure and in some cases fatalities. Workers on the tunnel often suffered from what came to be known as "caisson disease" or "the bends," caused by the immense forces of compression and decompression experienced while working in the tunnels (9). This problem was so prevalent that as construction progressed the rate of worker deaths caused by "the bends" rose to twenty-five percent (10). Materials in the collection document worker complaints and deaths resulting from this disease as well as providing a technical record of the construction of the tunnel. The highlight of the materials relating to the Hudson River Tunnel is an album that contains photographs of workers in the tunnel and a detailed daily report of the construction progress on the tunnel that was maintained by Hutton's assistant, Walton Aims. The first hand account in these reports provides insight not only into the construction of the tunnel, but also the problems encountered.

Another project featured in the Hutton collection that was devised in response to the population explosion in the City of New York in the nineteenth century is the Harlem River Bridge, or as it is now known, the Washington Bridge. Known as one of the longest steel arch bridges of its time, the Harlem River Bridge also represents that spirit of invention and innovation that was prevalent in the civil engineering field during the nineteenth century. The collection provides an invaluable resource for those wishing to track the construction of the bridge from early concept drawings and proposals to finalized plans. Also present are photographs of the construction and workers. Societal response to the bridge in the form of newspaper and magazine clippings help to create the narrative of the Washington Bridge, and these are supplemented by correspondence from the builders, suppliers, and planners.

This collection also includes diaries, 1866-1901; letterpress copybooks, 1858-1901; correspondence on the Chesapeake and Ohio Canal, Hudson River Tunnel, Washington Bridge over the Harlem River, and Maryland and Colorado railroads, 1861-1901, and on Hutton's financial and real estate affairs, 1835-1921; construction photographs of the Harlem River, Cairo, Poughkeepsie, Niagara bridges and the Hudson River Tunnel, Washington Aqueduct, and Capitol Dome (in the form of albumen, cyanotype, salted paper print); data and drawings; rolled land profile drawings; canal notes, 1828-1892; Hudson River Tunnel construction reports, 1889-1891; publications, drawings, and maps of railroad routes; pamphlets and reprints on hydraulic works and water supply; road, railway, bridge, and hydraulic construction specifications, 1870-1900; drawings (linen, oil cloth, and heavy drawing paper), and blueprints; account books, 1891-1899; and plans, drawings, field notebooks, and publications on American and European construction projects, especially in Maryland, New York, and France; personal correspondence detailing his role as executor for the estates of Benjamin H. Hutton, Joseph Hutton, Annie Theller, and the Countess H. De Moltke-Hvitfeldt and his relationships with his children, siblings, cousins, and colleagues, 1850-1942.

Materials are handwritten, typed, and printed.

Special note should be made that any materials dated after the year 1901 were added to the collection by another creator who is unidentified. It can be speculated that professional materials added after this date were contributed by his brother and colleague Nathanial Hutton or his son Frank Hutton. Personal materials contributed after this date may have been added by his wife, daughters, or other members of his extended family.

Series 1, Letterpress Copybooks, 1858-1901, consists of twenty seven letterpress copybooks containing correspondence between Hutton and other engineers, architects, and building suppliers. The letterpress copybooks in this series have been arranged chronologically. The books involve a process by which ink is transferred through direct contact with the original using moisture and pressure in a copy press. The majority of the correspondence is business- related. Some letterpress copybooks are devoted to specific projects such as the Washington/Harlem River Bridge, Chesapeake and Ohio Canal, Baltimore and Drum Point Railroad, Annapolis and Elk Ridge Railroad, and the Baltimore and Ohio Railroad. The letterpress copybooks provide a record of correspondence written by Hutton, which makes it distinctive from the other correspondence in the collection. Most of the other correspondence has Hutton as recipient.

The letterpress copybooks also document Hutton's various residences throughout his life and provide a glimpse into the civil engineering profession at the time by demonstrating how engineers shared ideas and comments about projects. This can be supplemented with the printed materials in the collection as many of the authors also appear in the correspondence. Other topics covered in the letterpress copybooks include business reports (specifically the report of the president and directors of the Baltimore and Drum Point Railroad), records of people and companies involved in projects, pasted in engineering sketches, engineering specifications and notes, travel expenses and estimates, construction histories and progress, legal issues with family estates, tax information, Colorado Railroad, payment certificate schedules, St. Paul Railroad, personal correspondence, title guarantees, Hudson River Tunnel, financial matters, real estate matters, insurance information, sketches and drawings, supply lists, cost estimates, the Memorial Bridge, Coffin Valve Company, engineering expenses, engineering calculations, payroll notes for Kingston Water Supply, proposals, account information, Hutton Park, reservoirs, contract drafts, French Society of Civil Engineers, inspection results (specifically Piedmont Bridge), land descriptions, damage reports, Morse Bridge, Illinois Central Railroad, North Sea Canal, moveable dams, iron works, site histories, Potomac Lock and Dock Company, Kanawha River canal (lock quantities, specifications, payroll information), Pennsylvania Canal, and bills for services.

Series 2, Professional Correspondence, 1861-1901, consists of correspondence that relates to Hutton's architectural and engineering projects. This series is further subdivided into two subseries: Project Correspondence and General Correspondence. Subseries 1, Project Correspondence, 1876-1899, correspondence is divided by project and arranged alphabetically. Subseries 2, General Correspondence, 1861-1901, is arranged chronologically. Both series contain handwritten and typed letters. Some letters are on letterpress copybook pages and are most likely copies. Some materials are in French and Spanish. Special note should be made that this series does not contain all of the professional correspondence in the collection. Some correspondence has been separated according to project and placed in Series 8, Professional Projects, 1830-1965, in order to make it easier for researchers to access materials related to those subjects.

Subseries 1, professional correspondence topics include comparisons between construction projects (specifically comparisons of the Kanawha River Canal to other canals), supply lists, location recommendations, sketches, construction plans and modifications, bills for supplies and works, leaks in the gates, cost estimates, Brooklyn Water Supply, use of lake storage (Ramapo Water Supply), water supply to states and counties, damages to water supply pipes, estimates of water quantities, responses to construction reports, legal issues related to projects, Baltimore and Ohio Railroad, and payment for services.

Subseries 2, general correspondence topics include employment opportunities, committee meetings and elections, land surveys, sketches, engineering plans and ideas, work on projects, dismissal from projects, notes on supplies, Washington Aqueduct, construction progress, land purchases, Civil War, Jones Falls, cost of water pumps, steam drills, lots divisions and prices, repairs, report of the engineering bureau, tidewater connection at Annapolis, bridge construction, construction costs, statement of vessels that entered and cleared Baltimore, technical questions from colleagues, Baltimore and Ohio Railroad, supply costs, letters of introduction, requests for reference, changes to plans and designs, survey reports, St. Andrew's lot, Canal Coal Company, publication process, American Society of Civil Engineers and its members, responses to project inquiries, Graving Dock gross revenue, job offers, specifications, trade figures, contracts, water levels, appointment dates and times, moveable dams, proposals for membership, salaries, Piedmont Coal Lands, maps, land profiles, Washington Bridge, board payments, Nicaragua Canal, Grant Coal Company, statistics, engineering notes, Hartford Bridge, water pressures, coal deposits, Colorado Coal, pipe lines, reservoirs, boat costs for canals, floods, bridges, letters of resignation, engines, Ruxton Viaduct, Colorado and Midland Railroad, Morse Bridge, share values, railroad locations, membership invitations, call for submissions, structural tests, record of accounts for room and board, appointments, water rights (Putnam County), publications, blueprints, visitation programs, cotton compresses, street trenches, pressures in dams, level tests, Portland Transportation bureau, trade information, concrete steel, Chicago drainage canal, ship canals, Augusta Cotton and Compress Company, Sooysmith case, Consolidated Gas Company, masonry, book binding, Columbia Railway Company, jetties, land grades, Chesapeake and Delaware canal, water wheels, pneumatic lock, tunnel arches, rifton power, Hutton's health, elevators, Brooklyn Bridge Terminals, girder weights, legal issues and their results, rating table for the Potomac, land profiles, transmission lines, transformers, water turbines, and water power on the Potomac River.

Correspondents for this series include the following: Captain Montgomery C. Meigs, Captain T.W. Symons, William Bryan, Ernest Flagg, John Hurd, Jake Wolfe, J.C. Saunders, J.H. Dolph, Charles J. Allen, G.H. Mendell, Virgil S. Bogue, B.A. Mounnerlyn, Edward Burr, H.G. Prout, R. William, H. Dodge, C.R. Suter, M. Mink, W.R. King, John Lyons, Alex Brown and Sons, John G. Butler, D. Condon, Bernard Carter, R.P. McCormick, D.R. Magruder, Andrew Banks, Isaac Solomon, C.J. Mayer, C.W. Kern, John Herring, James S. Mackie, D.R. Magunde, D. Rittaguide, R.S. Stevens, J.L. Raudolph (Baltimore and Ohio Railroad), J.M. Lane, W.D. Stuart, W.G.P. Palmer (Committee Church of the Ascension), C. Crozet, General W. Hughes, V.R. Maus, J.M. Hood (Western Maryland Railroad Company), Ernest Pontzen, M. Haus, William F. Craighill, Harry Hutton, John W. Pearce, Reverend James A. Harrald, William Watson, A.L. Rives, Thomas Monro, A.F. Croswan (Commander United States Navy), H.R. Garden, William McAlpine, James Forrest, Wm. Bloomsfield, Daniel Ammen, Linel Wells, A. and Otto Sibeth, Alfred Noble, Clemens Hershel, Sidney Warner, E.H. de Rheville, Theodore Cooper, William Findlay Shunk, Lewis S. Wolfe, Rufus Mead, Theodore F. Taylor, John Bogart, J. Whaler, B. Williamson, Colonel F.V. Greene, Robert H. Sayre (Lehigh Valley Railroad Company), Charles W. Pussey, Louis Q. Rissel, V.C. Bogue, H.C. Eckenberger, Melville E.G. Leston, Edwin Parson, Rudolph Hering, R.S. Hale, F.M. Turner, Thosl Martindale, Justus C. Strawbridge, William M. Ayresm, R.L. Austin, A.M. Miller, P. Livingston Dunn, T.J. Cleaver, C.S. Dutton, H.A. Carson, William Bainbridge Jaudon, H.A. Presset, Thomas H. McCann, Russel Sturgis, H.G. Prout, Alexis H. French, John K. Cowen, F.W. Williams, J. Waldorf, B.H. Byrant, B.H. Jones, M.H. Rogers, J.W. Ogden, General W. Cashing, William Longhudge, A.J. Cameron, T.L. Patterson, J.J. Hagerman, H. Wigglesworth, Charles B. Rowland, E. Bantz, W.G. Lathrop, Clarence King, George Rowland, George A. Tibbals (Continental Iron Works), George N. Vanderbilt, Eugene C. Lewis, F.P. Burt, Colonel John C. Clarke, Lieutenant Thomas Turtle, W.S.M. Scott, E. Bates Dorsey, Bernard Carter, George M. Shriver (Baltimore and Ohio Railroad), Russel Sturgis, Macmillan Publishing, James Abernethy, B. Baker, J.G.W. Fynje, A. Mallet, Jean Hersuy, L.F. Vernon Horcourt, Robert Lilley, A.J. Johnson, F.M. Colby, Henry D. Loney, A.S. Cameron, James A. Harrald, William Watson, John B. Lervis, A.L. Rives, Edwin F. Bidell, Frank H. Stockett, E. McMahon, C.F. Elgin, Enrique Budge, G. Clayton Gardiner, Dwight Porter, William A. Chapman, T.E. Sickels, Theodore Cooper, C.J. Warner, Institution of Civil Engineers, Robert Gordon, United States Coast of Geodetic Survey Office, C.P. Pattun, J.N. Putnam, Sidney B. Warner, H.D. Fisher, Union Pacific Railway Company, Lewis S. Wolle, George E. Waring Junior, The American Exhibition, G.F. Swain, American Society of Civil Engineers, N.H. Whitten, U.S. Engineer Office, Government Works Committee, J.J. Hagerman, D. Jackson, Sterling Iron and Railway Company, E.P. Alexander, E. Williamson, Central Railway Company of New Jersey, William A. Underwood, F. Collingwood, James Dun (Atchison, Topeka and Santa Fe Railroad Company), Henry F. Kilburn, Louis A. Bissell, Virgil G. Boque, H.C. Eckenberger, Melville Egleston, Charles Parson, George Swain, Continental Iron Works, Rudolph Hering, J.B. Gordon, Mayor's Office (Baltimore), Harry Robinson, Pennsylvania Railway Company, W.H. Gahagan, L. Luiggi, B.H. Bryant, T.J. Cleaver (Chesapeake and Delaware Canal Company), H.A. Carson, H.A. Presset (Department of the Interior, United States Geological Survey), John K. Cowen, Vernon H. Brown, J. Waldorf, B.H. Bryant, L.F. Root, P.W. White, Metropolitan Railroad Company, Charles F. Mayer (Consolidated Coal Company, Cumberland and Pennsylvania Railroad Company), J.M. Lane (Western Maryland Railroad), Dr. R.S. Stewart (Annapolis and Elk Ridge Railroad), Baltimore and Drum Point Railroad (John Lyons, John G. Butler, D. Candon, R.P. McCormick, Andrew Banks), Thomas F. Rowland, J.A. Bensel, Walton Aims, S.D. Coykendall, H.C. Rogers, John F. Ward, T.B. Jewell, H.A. Pressey, C.S. Armstrong, J. Nennett, V.G. Bague.

Series 3, Personal Correspondence, 1850-1942, contains correspondence with immediate and extended family, specifically the heirs to the Benjamin H. Hutton and Joseph Hutton estates and Adele Gorman. Correspondence is primarily arranged chronologically, but some files have been divided based on subject or author (the Deer Park and Adele Gorman files), or by form (the Telegrams, and Cablegrams file). Special note is made of the posthumous correspondence file, which includes correspondence both relating to Hutton's death and correspondence that was written by family members after the years of his death. The series contains both hand written and typed letters. Some correspondence is in French. The correspondence demonstrates his relationship with his children specifically Elizabeth (Bessie) Hutton, and illuminates his role in his family. This series also provides details about nineteenth century upper class society and activities. Special note should be made that this folder does not contain all of the personal correspondence contained in the collection. Some correspondence has been separated according to recipient, or subject in order to make researching these recipients or subjects easier.

Series 3 correspondence topics include: estate payments, distribution of assets, funds transfers, estate lines, conflicts with tenants, sketches, lot maintenance, real estate sales, deeds, real estate sales negotiations, congratulations wishes on new babies, family illnesses, family affairs and travels, traveling directions, personal investments, invitations for social occasions, family debts, professional interests, professional and personal appointments, family issues, requests for money, sketches, advice to children (specifically Frank Hutton), life insurance, books, letters of introduction, legal issues, funeral expenses, charity donations, advertisements, minutes from professional organizations, army enlistment, deaths of friends and family, recipes, estimates of personal expenses, renovations, stock certificates (Great Northern Railway Company, New York), food, social activities, the weather, marriages, real estate and construction plans, and loan agreements.

Correspondents include the following: Frank Hutton, Thomas B. Brookes, J.L. Marcauley, C.M. Matthews, Edward J. Hancy, John M. Wilson, H.A. Carson, William H. Wiley (of John Wiley and Sons Scientific Publishers, New York), Georgina Hutton, Pierre and Jane Casson, George McNaughlin, Henrietta Hutton, Aaron Pennington Whitehead, J.B. Wheeler, B. Williamson, Robert De Forest, Elizabeth (Bessie) Hutton, Grace Beukard, J.C. Saunders, Mary Hutton, William J. Pennington, C.S. Hurd, Henry C. Cooper, Henry J. Segers, S.F. Miller, Annie Theller, Alfred Noble, Maria Burton, Joseph Hobson, E. Lennon, F. Hulberg, Charles Gordon Hutton, Edward C. Ebert, A. William Lewin, E.R. Dunn, William P. Craighill, Theodore Cooper, P.I. Chapelle, Anita McAlpine, Clarence King, Victoria Raymond, and Adele Gorman.

Series 4, Personal Materials, 1835-1946, contains documentation about Hutton's personal finances, role as executor of the Benjamin H. Hutton, Joseph Hutton, Annie Theller, and Countess H. De Moltke-Hvitfeldt estates, Mary Augusta Hutton (wife), Mary Hutton (daughter), Frank Hutton, John Caulfield (son-in-law), and B.F. and C.H. Hutton. The series has been divided into four subseries: Financial Records, 1876-1901, Estate and Real Estate Records, 1835-1921, Other Huttons, 1876-1936, and Personal Material, 1878-1946. Subseries 2, Estate and Real Estate Records, 1835-1921, contains correspondence relating to specific family estates and family members. This correspondence was separated from Series 3, Personal Correspondence, 1850-1942, to make it easier for researchers to access all records relating to the family estates. This series includes hand written, typed, and printed materials. Some materials are in French. All material dated after 1901 has been added to the collection by other creators such as Hutton's wife and children.

Subseries 1, Financial Records, 1876-1901, includes account books, account records, correspondence related to bank accounts, bank statements, financial notes, bills and proofs of payment, rent receipts, tax bills (New York, Flatbush, Montgomery County), checks, money exchanges, receipts for tax payments, real estate receipts, stock and bond certificates, loan agreements, executor accounts, rebate calculation sheet, and tax and insurance payments.

Subseries 2, Estate and Real Estate Records, 1835-1921, includes property maps and information (rent, mortgage costs, deeds), correspondence, notes on estate distribution, estate assets, value of estate and estate payments, account records, loan agreements, receipts, proof of payments, checks, financial records, legal documents, insurance documents, tax bills, auction receipts, and wills relating to the estates of Benjamin H. Hutton, Joseph Hutton, Countess H. de Moltke-Hivtfeldt, Annie Theller, and William R. Hutton. Also included are correspondence, property maps and information, and deeds and mortgages on Hutton properties.

Subseries 2, the estate and real estate records correspondence topics include: Virginia state building codes, construction costs, construction notices, purchasing offers for property, real estate prices, receipts of payments, property lines, real estate purchases and sales, real estate sales negotiations, deeds insurance estimates and costs, loan costs, property estimates, renovation costs, mortgages, property damages and repairs, property tax payments, insurance rates and payments, rent payments, telephone installation, building permits, rental agreements, reports on property condition, contracts of sale, conflicts with tenants, changes of address, deeds, distribution of estate monies, details about the Countess' illness, estate arrangements, changes of address, problems arising out of estate distribution, payment of debts, will details, selling of mortgage shares, accounts, estate settlement, money cables and transfers, dealings with lawyers, rent on Hutton Park property, legal and accounting fees, power of attorney transfer, investments, property security, land appraisals, lists of assets, legacy taxes, mortgages transfers, property management, Flatbush property, property rent and values, and physicians bills.

Correspondents include the following: A.C. Weeks, Walter I. Green, John D. Probsh, A.G. Darwin, Thomas H. McCann, Allan Farguhar, Thomas Dawson, Potter and Crandall Real Estate and Insurance Brokers, George C. Tilyou, H.D. Olephant, F. Winston, Richard E. Calbraith, Frank P. Martin, Henry DeForest, Henry C. Cooper, Metropolitan Telephone and Telegraph Company, John Ecker, C.K. Avevill, Georgina Hutton, Edward J. Hancy, Robert Graham, W.M. Bennett, Willis E. Merriman, Nathan L. Miller, Harry Hutton, Marquise de Portes (Adele Gorman), Annie Theller, Samuel L. Theller, Mrs. R. Locke, Frank Z. Adams, John Palmer (Secretary of State, New York), J.T. Cammeyer, Frank P. Martin, Florence Theller, Francis H. Seger, Henry C. Cooper, D.W.G. Cammeyer, Campbell W. Adams, Jane Casson, Elizabeth Hutton, Rene de Portes, H.G. Atkins, Grace Beukard, Aaron Pennington Muikhead, J.E. Delapalme, T.H. Powers, Egerton L. Winthrop Junior, George B. Glover, William Jay and Robert W. Candler, B. Williamson, J.E. Knaff, Cornelius C. Vermeule, S.V. Hayden, Charles G. Landon[?], H.A. Hurlbert, F.A. Black, John L. Calwalder, the Health Department of New York, A.G. Darwin, William Laue, Frederick Frelinghuysen, Charles S. Brown, Henrietta Hutton, Edward Gelon.

Subseries 3, Other Huttons, 1874-1936, includes professional drawings and proposals, checks, insurance information, correspondence, tax information, medical information, tax bills, relating to Mary Augusta Hutton (wife), Mary Hutton (daughter), Henry and Harry Hutton, Frank Hutton (son), John Caulfield (son-in-law), B.F. Hutton, and C.H. Hutton.

Subseries 4, Personal Materials, 1878-1946, contains handwritten property notes, school notes, sermons, travel documents, menus, Christmas cards, jewelry box, postal guide, typed religious materials and flyers.

Series 5, Diaries, 1866-1901, contains twenty nine diary books that document both Hutton's personal and professional life. These diaries provide not only a record of Hutton's life, but were also used by Hutton himself as a reference tool. When working on projects he would refer to notes and observations he made in his diary (as evidenced by notes made in his diaries). The first pages of the diaries often list his height, weight and clothing sizes as they varied from year to year. A researcher could probably use the cashbooks (see Series 7) and the diaries in conjunction as both detail the purchases made by Hutton. Many of the diaries also include a short record of accounts in the back. The diaries are arranged chronologically.

Topics found in the diaries include short form accounts of daily activities and appointments, records of the weather, Chesapeake and Ohio Canal project, construction progress on projects, steam pumps, sketches and calculations, extension of Washington railroads, cost of food, work supplies, travel costs, costs of goods and food, work deadlines, home renovations, visits to family, cash accounts, accounts of household duties, produce on Woodlands property, records of deaths, debts owed, account of clearing Woodlands property, church visits, Hancock and Tonoloway Aqueduct, canals, Drum Point Railroad, Montgomery C. Meigs, Washington Aqueduct, Annapolis Water Works, telegram costs, wages for Chesapeake and Ohio Canal project, William Craighill, Morris Canal, Annapolis Railroad and Canal, professional duties (inspections), Kanawha River Canal, travel schedules, professional expenses, cash received from Chesapeake and Ohio Canal project, Baltimore and Ohio Railroad, John's Dam, cathedral construction (St. Patricks?), Piedmont Bridge, Cumberland, account of farm property belonging to Major Campbell Bruns, Cunard Pier, Marquise de Portes, rent costs, Baltimore Canal, Kingston Water Supply, Croton Orange Estate, Pierre Casson, Hudson River Tunnel, Washington/Harlem River Bridge, entertainment costs, Greenwood cemetery, train schedule, notes on illness, real estate sales, Hutton Park, Benjamin H. Hutton estate and heirs, estimates, accounts of correspondence received and sent, Central Railroad, rent on Orange properties, addresses, contracts and building supplies for projects, personal finances, Joseph Hutton property on Vanderbilt Avenue, New York, amounts paid and received, medical appointments, Ramapo Water Company, drawing progress of maps and diagrams, Harbor Board (New York), property repairs, inspection and test reports, reservoirs, lists of birthdays, Boston Tunnel, family financial issues, tax payments, and prayers.

Series 6, Notebooks, 1860-1900, document the engineering and architectural projects worked on by Hutton. The series has been divided into three subseries: Subseries 1, Engineering and Survey Field Notes, 1860-1899; Subseries 2, Notebooks, 1871-1886; and Subseries 3, Notes, 1863-1900. Subseries 1, Engineering and Survey Field Notes, 1860-1899, contains sixteen field notebooks used by Hutton. Subseries 2, Notebooks, 1871-1886, contains seven notebooks. Subseries three, Notes, 1863-1900, contains four documents.

Some notebooks correspond to specific projects such as the Kanawha River Canal (lockgate and Phoenix Waterline), Chesapeake and Ohio Canal, Buffalo Reservoir, Potomac Lock and Dock Company, Northern Adirondack Railroad account, Washington Aqueduct, Little Rock Bridge, Wilson-Adam Dock, Croten Brick Works, Hutton Park, Centennial Iron Works, Cumberland Canal, Williamsport Aqueduct, Catoctin Aqueduct, Alexandria Canal, Miller's Saw Mill, Seneca Dam, Union Tunnel, Cumberland Waterworks, Victoria Bridge, Welland Canal, North Sea Canal, Ramapo Water Company, Annapolis Water Company, Antietam Aqueduct, Interoceanic Canal, San Quentin Canal, Suez Canal, Amsterdam Canal, Harlem Bulkhead, Morris Canal, Blue Lake Canal, and Nicaragua Canal.

These notebooks should be used in conjunction with the other materials in the collection related to professional projects, as they often provide more detailed accounts of the construction and land surveys. Some of the notebooks contain entries from several different sources. The notebooks were probably shared among the engineers working on these projects. The notebooks also contain looseleaf ephemera such as hand written calculations, newspaper clippings, and blueprints. Languages found in this series are English and French.

Notebook topics include construction projects, supply needs, costs for labor, sketches (Woodland Mills, landscapes, dams, railway cars, Noland Tunnel), costs of crops, survey measurements, cost of livestock, aqueducts, inspections, canal bridges, seed prices, dams, measurements, coffer dam, canal maintenance, worker salaries, calculations, towpath sketches and measurements, shipping rates, worker accidents, water and coal used, geometrical sketches (Washington Aqueduct), locks, damage reports, interactions with other engineers (William Reading), coal shipments on the canal, travel expenses, land survey notes, drafts for correspondence, William Craighill, Victoria docks, lists of personal supplies used, construction time estimates, surveying expenses, telegram costs, sand pump, canal from Sherling to Tuxedo Bay, analysis of several artificial lakes and reservoirs, distances of reservoirs to main pipes, calculations for the Austin Wheel, engine construction, bridges, gauging water depth, results and observations of tests and performance, problems with construction, to-do lists, cost of land surrounding towpaths, Fawcett's Lock, Tarman's Lock, comparison of costs in transporting coal by water and by rail, inspection notes, iron work, drainages, leaks, cost of supplies, watergates, harbor ferries, railroad station distances, flood protection, Panama Canal via the Nicaraguan route, cost of jetties, water levels, pressure of steam, boilers, steam and water cycle, water depth, cement, Great Falls, Virginia, waterflow, soundings, time of floats, flow of currents, rain fall measurements, tunnel measurements, cost of trenching San Francisco water supply, record of livestock, cost of food, rates of sawing woods and mills, preliminary railroad line measurements, profile of final line, and railroad line profiles.

Series 7, Cash Books, 1856-1899, contains seven cashbooks which list prices for personal items purchased by Hutton. Topics include groceries, church dues, clothes, hygiene products, cigars, some short journal entries about his work (Williamstown), concerts, dinners, family addresses, cakes, meals, cars, stamps, office supplies (pencils and papers), valentines, glasses, gloves, fabric, medicine, needles, diapers, tobacco, shoes (adult and childrens), travel expenses, telegrams, candles, newspapers, liquor, coal oil, jewelry, allowances given to family members, bank deposits, monies paid and received, taxes, subscriptions, tailoring costs, deposits and payments into estate trusts, and notes about payments to Benjamin H. Hutton heirs. The cashbooks also contain some personal loose leaf ephemera such as prayers, sketches, and engineering notes collected by Hutton.

Series 8, Professional Projects, 1830-1965, contains documents about engineering and architectural projects throughout Hutton's career, including information about the professional organizations and the legal issues in which he was involved. This series has been divided into eight subseries based on project, document form, and document subject. Some materials are in French and Italian.

Series 8, Professional Projects, also includes correspondence related to specific projects, primarily the Chesapeake and Ohio Canal, the Hudson River Tunnel, the Washington/Harlem River Bridge, and the Georgetown Incline.

Topics include construction and repair to the Chesapeake and Ohio Canal, engineering and use of Chesapeake and Ohio Canal, worker contracts, supply and labor purchases, design plans and proposals, construction and repair costs, supply notes and costs of supplies, water pressure and power, shipping materials and routes (specifically the shipping of coal), inspections and their findings, condition of canal dam and locks, water supply, drainage, sketches, board proceedings, business meetings, deeds, cost comparisons to other shipping methods, hiring processes, wages, cost estimates, Hutton's consulting fees, measurements and calculations, funding issues, worker conflicts, negotiations with municipal governments, payment schedules, bills for services, air pressure in Hudson River Tunnel, permission for construction, specifications, mortality rate among workers on the Hudson River Tunnel, construction reports, outlet incline, proposals for construction, letters of introduction, railroad versus water for trade, controversy with Tiersey, construction contracts, construction schedules, construction issues, construction progress, construction damage, basis for estimates, supply requests, internal politics, changes to construction plans, contract and price adjustments, issues with suppliers, construction delays, work permits, bills, worker issues, engineering notes, construction excavations, expenses, construction instructions, Union Bridge Company, lighting installations, construction processes, hiring practices, electrical conductors, water proofing, hydraulics, cement, concrete, payment of contributors, processes of approval for construction, meeting dates of the Harlem River Bridge Commission, and contract restrictions.

Correspondents include the following: W.W.M. Kaig, Henry Dodge, E. Mulvany, John Shay, James Clarke, H.D. Whitcomb, Horace Benton, J. Rellan, J.R. Maus, W.E. Merrill, A.P. Gorman, J.H. Staats, Vernon H. Brown, Charles H. Fisher (New York Central and Hudson River Railway Company), B. Baker, John Fowler, Benjamin and John Dos Passos, Charles B. Colby, Charles B. Brush, S. Pearson, Stanford White, Horace E. Golding, R.H. Smith, Daniel Lord, A. Fteley, Herbert Hinds, J.R. Bartlett, D.M. Hirsch, M.H. Bartholomew, Thomas O. Driscoll, W.E. Porter, Thomas F. Rowland, George Edward Harding, R.H. Dames, William Watson, James B. Eads, J.D. Bright, H. Aston, Charles Suley, A.M. Maynard, W.R. Henton, G. Geddes, H.P. Gilbut, Malcolm W. Niver (Secretary of the Harlem River Bridge Commission), J.D. Patterson, George Devin (Assistant Engineer Washington/ Harlem River Bridge), J.B. Wheeler, John Bogart, Charles Burns, J. McClellon, Rob Bassee, B. Williamson, Theodore Cooper, Lewis Cass Ledyard, R.M. Hunt, John Cooper, Henry Wilson, A.A. Caille, Myles Tierney, W. Pentzen, L.B. Cantfield, George Q. Grumstaid Junior, M.J. Funton, George Pierce, W.O. Fayerweather, Noah S. Belthen, Herbert Steward, W.M. Habirsham. Subseries 1, Chesapeake and Ohio Canal, 1828-1965, consists of plans, blueprints, land profiles, drawings, boat rates, contract forms, order forms, descriptions of the canal, design information, engineering data, sketches, cost estimates, land titles, microfilm, business papers, supply bills, patent bills, news clippings, reports, specifications, stockholder's reports, receipts, water leases, printed materials, and correspondence.

The Chesapeake and Ohio Canal project was started in 1828 and completed twenty two years later in 1850. The canal's main objective was to connect Georgetown to the coal banks above Cumberland, Maryland, providing a short and cheap trade route between the eastern and western United States. It was also hoped that the canal would provide greater communication and travel between these two regions. Plagued by natural disasters, and construction setbacks, the canal was never completed in time to be useful and became obsolete shortly after its completion. Canal trade was eventually put out of business by the increase of railroads. Although it was an important development in engineering at its inception, the Chesapeake and Ohio Canal is no longer in use and has become what locals affectionately refer to as "the old ditch." The canal was designated a National Historical Park in 1971 and consists of 184.5 miles of hiking and biking trails.

Subseries 2, Hudson River Tunnel, 1887-1901, consists of agreements for construction, certificates, contracts, and cost estimates, construction reports, engineering notebooks, engineering notes, sketches, land profiles, maps, progress profiles, plans, proposals, printed material, statements of expenses, and correspondence.

The Hudson River Tunnel project was started in 1874, and the final tubes were opened in 1910 after several construction setbacks. The tunnel connects Weehawken, New Jersey and Pennsylvania Station in Manhattan, New York City. Today the Hudson River Tunnel, known as the North River Tunnels is used by Amtrak's Northeast Corridor and New Jersey Transit rail lines.

Subseries 3, Harlem River Bridge, 1878-1982, consists of blueprints, printed materials, photographs, engineer's estimates, schedules, costs, reports, proposals, contracts, specifications, and correspondence.

The Harlem River Bridge project was started in 1885 and was completed in 1889. It spans the Harlem River in New York City, New York and connects the Washington Heights section of Manhattan with the Bronx. It was later named and is still known as the Washington Bridge and has been adapted over time to carry highway traffic. These adaptations have allowed the bridge to remain in use today.

Subseries 4, Other Projects, 1858-1832, consists of drawings, maps, blueprints, plans, proposals, cost estimates, bills, correspondence, sketches, land profiles, dimensions, engineering notes, account records, photostats, supply lists, calculations, legal documents, surveys, inspection reports, financial data, and measurements on architectural and engineering projects. Highlights of this subseries include: Western Maryland Railroad, Washington Aqueduct, Panama Canal, Ramapo Water Company, Piedmont Bridge, Northern Adirondack Railroad, Columbia Railroad, Morris Canal, Pittsfield and Williamstown Railroad, Suez Canal, St. Gothard Canal, Tansa Dam, Colorado Midland Railroad Company, Memorial Bridge, Mersey Tunnel, Little Rock Bridge, Kingston Water Supply, Kanawha River Canal, Florida Ship Canal, East Jersey Water Company, Consolidated Coal Company, Dismal Swamp Canal, Boston and Baltimore Tunnels, St. Patrick's Cathedral, Baltimore and Ohio Railroad, Annapolis Water Company, Baltimore and Drum Point Railroad Company, and the Baltimore Beltline.

Subseries 5, Unidentified Project Files, 1872-1900, consists of bills of sale, engineering forms and regulations, cement test results and methods, census bulletin, contracts, cost estimates, correspondence, notes on publications, engineering data and notes, drawings, surveys, sketches, payrolls, photographs, and reports.

Subseries 6, Specifications, 1870-1900, consists of documents related to some of Hutton's projects, including specifications for bridges, reservoirs, canals, viaducts, docks, buildings, water works, and tunnels. Some specifications are more general, and some are blank proposal/specification forms. There are also proposals for estimates and a "call" or advertisement to contractors to bid on certain projects. Many of the specifications deal with projects in New York State, but projects in Pennsylvania, the City of Baltimore, and Europe are represented. The materials are arranged alphabetically by project name. There is one folder of documentation for the Potomac River Bridge (Arlington Memorial Bridge) in Washington, D.C. The Arlington Memorial Bridge was part of the 1901 McMillan Commission's plan for restoring Pierre (Peter) Charles L'Enfant's original plan for the capital. Two decades passed before construction was initiated by the architectural firm McKim, Mead, and White. The documentation for the Memorial Bridge consists of calculations and monetary figures for materials such as granite.

Subseries 7, Legal Documents, 1886, contains documents related to a patent infringement suit for moveable dams involving Alfred Pasqueau vs. the United States. This file contains both a printed version of the case and a handwritten statement from Hutton.

Subseries 8, Professional Organizations, 1870-1902, contains documents related to professional organizations where Hutton held membership. Specific organizations represented are American Institute of Architects, American Society of Civil Engineers, Institution of Civil Engineers, Boston Society of Civil Engineers, Societe des Ingenieurs Civils de France, Librarie Polytechnique, American Agency of "Engineering" in London, Imperial Institute, League of Associated Engineers, Railroad Corporation, American Institute of Mining Engineers, and the Century Association. Material in the subseries includes correspondence, candidates for membership, membership payments, membership lists, meeting minutes, schedule of terms, professional practices, charges, articles of association, invitations for membership, and election notes. Some materials are in French.

Series 9, Printed Materials, 1850-1913, contains a variety of printed materials relating to engineering and architectural projects written by Hutton and fellow engineers. This series can be used to examine not only professional developments of the period and responses to those developments, but also to track how ideas were transferred between engineers across countries and continents. This series should be used in conjunction with the professional correspondence found in this collection, as many of the authors also appear there. Some materials are in French, German, Spanish, and Italian.

Subseries 1, Printed Materials by Hutton, 1852-1900, includes printed papers on the Missouri flood wave, the Ravine du Sud, the Potomac waterfront, the Colorado midlands, and the application of water supply machinery.

Subseries 2, Printed Materials by Others, 1826-1913, includes printed materials on the Chesapeake and Ohio Canals, Tehuantec Ship Railway, Interoceanic canals and railways, jetties, Nicaragua Canal, uses of cements, mortars, concretes, steam power, harbors, Niagara Falls, Kanawha River canal, Mississippi River, Hudson River Bridge, sewage disposal, Washington Aqueduct, specifications, construction progress reports, hydraulic experiments, water supply, drainage, road surfacing, sea walls, water-cooling apparatus, pollution reports, bridges, pipes, channels, reservoirs, irrigation, water power, and sewers.

Subseries 2 contains an issue of The North American Review in which Hutton has specifically highlighted an article entitled, "The Inter-Oceanic Canal." Please see the container list for names of authors.

Subseries 3, Printed Materials with No Author, 1852-1903, includes printed materials on harbor reports, Annapolis Water Company, Ramapo Water Company, water departments and boards, maps, engineer's reports, sea walls, preservation of structures, annual reports, Coal and Iron Railway Company, sewers, Baltimore and Drum Point Railroad, contract specifications, proposals, social club life, Croton Water Supply, law suits, water supplies, moveable dams, reservoirs, East River Bridge, Eastern Canal, water filtration, Kingston New Water Supply, water pipes, locks, docks, contracts, construction reports, Croton Water Supply, and surveys. Also included are issues of journals such as Le Correspondant, Circular of the Office of Chief Engineers, The Club, VIII Congres International de Navigation, Journal of the Association of Engineering Studies, and Journal of the Franklin Institute.

Subseries 4, Newspaper, Journals and Magazine Clippings, 1873-1900, contains clippings from a variety of newspapers such as Scientific American, andRailroad Gazette. Subjects included are the Union Tunnel opening in Baltimore, Drum Point Railroad, railroad company conflicts, Washington/Harlem River Bridge, Metropolitan Railroad, Western Maryland Railroad, crop prospects, lumber trade, North Avenue Bridge, Nicaraguan Canal, harbors, river improvements, reactions to engineering projects, Belt tunnel, city transit, Washington, D.C. flood in 1880, tunnel shields, Springfield Bridge, railroad patents, Panama Canal, jetties, Hudson Tunnel, steel boilers, composition and use of cement, and the Brooklyn Bridge.

Subseries 5, Oversized Printed Materials, 1889-1892, contains large printed materials related to the Washington Aqueduct, General Post Office Building, subway arches, cornices, Warwick's Castle, Neuschwanstein Castle, Renaissance paintings, botanical drawings, school buildings, church architecture, the Hospital for the Insane of the Army and Navy and the District of Columbia, the Panama Canal, Morningside Park, and the Mississippi Jetties. Also includes engravings of Hutton, T.N. Talfound, and F. Jeffrey and photographs of Montgomery C. Meigs, and Hutton. Some materials are in German and French.

References:

1. Ward, George Washington, "The Early Development of the Chesapeake and Ohio Canal Project," Johns Hopkins University Studies in Historical and Political Science Series XVII, no. 9-11 (1899): 8.

2. Ibid., 88.

3. Ibid., 55.

4. Ibid., 90.

5. Sanderlin, Walter S., "The Great National Project: A History of the Chesapeake and Ohio Canal," Johns Hopkins University Studies in Historical and Political Science Series LXIV, no. 1 (1946): 21.

6. Ibid., 282.

7. Gies, Joseph, Adventure Underground (Garden City, N.Y.: Doubleday and Company Inc., 1962): 134.

8. Ibid., 131-132.

9. Ibid., 135-136.

10. Ibid., 145.
Arrangement:
The collection is arranged into ten series.

Series 1, Letterpress Copybooks, 1858-1901

Series 2, Professional Correspondence, 1861-1901

Subseries 1, Project Correspondence, 1876-1899

Subseries 2, General Correspondence, 1861-1901

Series 3, Personal Correspondence, 1850-1942

Series 4, Personal Materials, 1835-1946

Subseries 1, Financial Records, 1876-1901

Subseries 2, Estate and Real Estate Records, 1835-1921

Subseries 3, Other Huttons, 1874-1936

Subseries 4, Personal Materials, 1878-1946

Series 5, Diaries, 1866-1901

Series 6, Notebooks, 1860-1900

Subseries 1, Engineering and Survey Field Notes, 1860-1899

Subseries 2, Notebooks, 1871-1886

Subseries 3, Notes, 1863-1900

Series 7, Cashbooks, 1856-1899

Series 8, Professional Projects, 1830-1965

Subseries 1, Chesapeake and Ohio Canal, 1828-1965

Subseries 2, Hudson River Tunnel, 1887-1901

Subseries 3, Harlem River Bridge, 1878-1892

Subseries 4, Other Projects, 1858-1932

Subseries 5, Identified Project Files, 1872-1900

Subseries 6, Specifications, 1870-1900

Subseries 7, Legal Documents, 1886

Subseries 8, Professional Organizations, 1870-1902

Series 9, Printed Materials, 1826-1913

Subseries 1, Printed Materials by Hutton, 1852-1900

Subseries 2, Printed Materials by Others, 1826-1913

Subseries 3, Newspaper, Journals, and Magazine Clippings, 1855-1901

Subseries 4, Oversized Printed Material, 1889-1892

Series 10: Drawings, 1875, 1883
Biographical / Historical:
Not much is known about the history of William Rich Hutton outside of his role in architectural and engineering projects of the late 1800s and early 1900s. In many cases, he is spoken of only in reference to his projects, and the short biographies that have been written read more like a resume than a life story. Because of this lack of information, this note will focus on Hutton's professional accomplishments, but will attempt to make some comments on his personal life.

William Rich Hutton was born on March 21, 1826 in Washington, D.C., the eldest son of James Hutton (died 1843) and his wife, the former Salome Rich (1). He was educated at the Western Academy (Washington, D.C.) from 1837-1840 under George J. Abbot and then at Benjamin Hallowell's School in Alexandria, Virginia, where he received special training in mathematics, drawing, and surveying (2). Hutton began his professional career in California when he, along with his younger brother James, accompanied their uncle William Rich to work for the United States Army. His uncle was a paymaster for the army and Hutton became his clerk. They traveled around the new state paying the various platoons stationed there, but Hutton also occupied his time by drawing the landscapes and structures he saw in the settlements of Los Angeles, San Francisco, La Paz, Mazatlan, Santa Barbara, Monterey, San Pedro, San Diego, and Cape San Lucas (3). These drawings are now held by the Huntington Library in San Marino, California. Hutton held the position of clerk until the spring of 1849, and in July of that year he began working with Lieutenant Edward O.C. Ord and completed the first survey of Los Angeles and its surrounding pueblo lands and islands. Hutton continued surveying in California from 1850-1851. He was hired by William G. Dana to survey the Nipomo Ranch in San Luis Obispo County and also surveyed the ranches Santa Manuela and Huer-Huero, both owned by Francis Z. Branch. After his employment with Dana, he became the county surveyor for San Luis Obispo County, where he prepared the first survey and map of the region. He also continued to survey ranches for Captain John Wilson during this time. In August 1851, he resigned from his position as county surveyor and moved to Monterey where he worked as an assistant to Captain (later General) Henry W. Hallack, superintendent of the New Almaden Quicksilver Mine in Santa Clara County (4). He remained in this position until March, 1853 when he returned to Washington, D.C. by way of Mexico (5).

Hutton began his career as a civil engineer in Washington, D.C. He was first assigned to the position of assistant engineer on a survey of the projected Metropolitan Railroad in 1853, which was chartered to connect Washington, D.C. with the mainline of the Baltimore and Ohio Railroad. In 1855 he began his professional relationship with Montgomery C. Meigs when he was appointed to the position of assistant engineer on the Washington Aqueduct. He also served as division engineer on this project until construction was shut down in 1861 because of the outbreak of the Civil War. Fortunately for Hutton, the construction on the Aqueduct was resumed in 1862, and when Congress transferred the supervision of the aqueduct project from the War Department to the Department of the Interior, Hutton was made chief engineer. By the end of the Civil War, Hutton's reputation as a civil engineer was established (6).

During this decade Hutton also served as the chief engineer for the Annapolis Water Works (1866) and as chief engineer for one of his most famous projects, the Chesapeake and Ohio Canal (1869-1871). Although some historians minimize Hutton as just one of many engineers to work on the Chesapeake and Ohio Canal, he did make one major contribution to its construction: the Georgetown Canal Incline. Perhaps the final effort of the Chesapeake and Ohio Canal company to compete with the emerging and fast expanding railroad, the Georgetown Incline was designed to allow canal boats to travel through the canal with low water levels and to alleviate canal congestion. Unfortunately, by the time the incline was completed use of the canal had decreased so significantly that it was no longer needed to help control traffic (7). Despite this, Hutton continued to work as a consulting engineer for the Chesapeake and Ohio Canal Company until 1881, when he was let go because of the dwindling fortunes of the company (7).

In the 1870s and 1880s Hutton was busy with several engineering projects. During 1871-1873, he was the chief engineer in the completion of the Western Maryland Railroad to Hagerstown and Williamsport (9). He also practiced as an architect with his brother, the prominent Baltimore architect Nathanial Henry Hutton, during the years 1873-1880. He relocated to New York in 1880, serving as chief engineer for the Washington Bridge in 1888 and 1889 and the Hudson River Tunnel from 1889 to 1891. In 1886, he became the consulting engineer for the New Croton Aqueduct and served in the same position for the Colorado Midland Railway between the years of 1886-1889 (10).

As his personal and professional correspondence shows, Hutton continued to work on various engineering and architectural projects until his death on December 11, 1901. In addition to these projects, he also invented the innovative system of locks and moveable dams used in the Kanawha River Canal. He was awarded the Diplome d'Honneur for this featat the Paris Exposition in 1878 (11). His correspondence also demonstrates how Hutton was respected within his professional community. These letters refer to the accuracy of his work, his willingness to help other colleagues and supply them with reference materials and information, and, in addition to all this, his politeness. It seems that these qualities defined not only his personality but also his ideology. In one of the cashbooks in the collection, dated 1899, a hand written note contains a religious parable of "The Straw." The phrase in this parable that speaks most to Hutton's work ethic, and to the spirit of inventors everywhere, is this: "Even so however lowly may be the act, however little opportunities we may have of assisting others, we may still do something. Let us beg to fulfil our duty in this regards by making ourselves useful to others by some little act of thoughtful charity..." (12). Hutton, in his dedication to civil engineering, seems to have lived up to this virtue, and in his work he changed the landscape of Washington, D.C. and New York.

The Fairy Godfather: Hutton's Personal History

His professional records reveal a man who was fiercely dedicated to his work. His obituary references his professional life more than his personal life (13). Despite his reputation in the professional engineering community, his personal records demonstrate that Hutton was also dedicated to his family and children. In 1855, he married Montgomery County native Mary Augusta Clopper (died 1915). Together they lived on her family's estate known as the Woodlands, and had five children: Frank C. Hutton, Mary Hutton, Elizabeth Hutton (later Caulfield), Rosa Hutton, and Annie Salome Hutton (14). It is at this estate that Hutton died and was buried. The personal letters to his wife found in the Woodlands Collection held at the Montgomery County Historical Society show a man in love and willing to take time from his work to write to his wife. His letters to his children show a similar interest and compassion. In the many letters found in this collection from his daughter Elizabeth (Bessie) one can see a father who is interested in not only his daughter's activities abroad, but also in her opinion. This interest also extends to his son Frank Hutton, as their correspondence shows Hutton offering his son advice on his own engineering projects.

Hutton also served as executor to many of his extended family's estates. Many letters show the conflicts that Hutton had to mediate and the dependence of his cousins on him for advice and money. Although his family was wealthy (his cousin was Benjamin H. Hutton whose daughters married into the court of Napoleon III), they were volatile, and his records seem to indicate that he served as a mediator for many of their disputes. In addition to this, as his nickname of Fairy Godfather suggests, Hutton was always willing to lend his family either financial or moral support when needed. Unfortunately, little other documentation concerning Hutton's personal life exists outside of this collection and the one held at the Montgomery County Historical Society.

References:

1. Waters, Willard O., "Introduction," California 1847-1852 (San Marino: The Huntington Library, 1942).

2. Waters, Willard O., "Memoir," Glances at California 1847-1853 (San Marino: The Huntington Library, 1942): ix.

3. Waters, Willard O., "Introduction," California 1847-1852 (San Marino: The Huntington Library, 1942). and Waters, Willard O., "Memoir," Glances at California 1847-1853 (San Marino: The Huntington Library, 1942): x-xi.

4. Waters, Willard O., "Introduction," California 1847-1852 (San Marino: The Huntington Library, 1942).

5. Waters, Willard O., "Memoir," Glances at California 1847-1853 (San Marino: The Huntington Library, 1942): xvii.

6. Waters, Willard O., "Memoir," Glances at California 1847-1853 (San Marino: The Huntington Library, 1942): xvii-xviii.

7. Skramstad, Harold, "The Georgetown Canal Incline," Technology and Culture, Vol. 10, no. 4 (Oct. 1969): 555.

8. Business Correspondence, Chesapeake and Ohio Canal, 22 February 1881, William R. Hutton Papers, 1830-1965, Archives Center, National Museum of American History, Smithsonian Institution, box number 27, folder number 29.

9. "William Rich Hutton," The Club: A Journal of Club Life for Men and Women,(July 1894):37

10. Ibid.

11. Monzione, Joseph, "William R. Hutton," A.P.W.A. Reporter (Sept. 1977): 7.

12. Cashbook, 1899, William R. Hutton Papers, 1830-1965, Archives Center, National Museum of American History, Smithsonian Institution, box number 23, folder number 5.

13. The Woodlands Collection, Montgomery County Historical Society.
Related Materials:
Materials in the Archives Center

The Montgomery C. Meigs Papers, 1870-1890, (AC0987). Contains materials relating to the construction of the Washington Aqueduct including a book of drawings illustrating reservoirs, tunnels, culverts, and other structural elements, a Government Senate Document relating to construction progress, scrapbooks created by Meigs that include newspaper clippings about the Washington Aqueduct project, water supply, engineering projects, building construction, architecture and other subjects. Collection is currently unprocessed, but is available for research.

Materials in Other Organizations:

The William Rich Hutton Papers, 1840-1961, are located at the Huntington Library in California (see http://catalog.huntington.org).

The collection contains 95 drawings, 13 letters, and 39 facsimile copies of letters and manuscripts. The illustrative material includes both watercolor and pencil drawings of California (including Los Angeles, Monterey, San Francisco, the New Almaden Quicksilver Mine, and the California missions), Baja California, Mexico, and Peru. There are also five pieces in the collection related to the author MarĂ­a Amparo Ruiz de Burton. In 1942, the Huntington Library published Glances at California 1847--853: Diaries and Letters of William Rich Hutton, Surveyor and California 1847--852: Drawings by William Rich Hutton.

The Hutton family papers are located at the Montgomery County Historical Society, Sween Library (see http://www.montgomeryhistory.org/sites/default/files/Family_Files.pdf).

The collection contains account books from the Woodlands estate, recipe books, livestock records, records of Mary Augusta Hutton (wife), Mary and Rose Hutton (daughters), newspaper clippings (including his obituary), correspondence, record books, deeds, bills and receipts, engineering papers, religious momentos (funeral service cards), and insurance papers.
Provenance:
The collection was donated by Mr. and Mrs. James J. Madine, a relative of Hutton's and last owners of the Woodlands estate; the Department of Forests and Parks, Maryland; Louis Fischer; and Mr. and Mrs. Mayo S. Stuntz, 1965-1966, 1974.
Restrictions:
The collection is open for research. Gloves must be worn when handling unprotected photographs and negatives.
Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
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Concrete construction  Search this
Concrete  Search this
Coal -- Transportation  Search this
Civil engineers  Search this
Civil engineering  Search this
Canals -- Panama  Search this
Canals -- Washington (D.C.)  Search this
Canals -- Maryland  Search this
Canals -- Design and construction  Search this
Bridges -- United States  Search this
Waterworks  Search this
Tunnels  Search this
Tunnels -- New York (N.Y.)  Search this
Construction -- Washington (D.C.)  Search this
Underground construction  Search this
Locks and dams  Search this
Shipping  Search this
Iron and steel bridges  Search this
Sewage disposal  Search this
Railroads -- Maryland  Search this
Railroads -- 19th century  Search this
Railroad engineering  Search this
Railroad companies  Search this
Aqueducts  Search this
Arch bridges  Search this
Architects -- 19th century  Search this
Books  Search this
Bridges -- New York (N.Y.)  Search this
Bridges -- Design and construction  Search this
Bridge construction industry -- United States  Search this
Engineering notebooks  Search this
Docks  Search this
Domestic and family life  Search this
Architecture -- United States  Search this
Architecture -- Washington (D.C.)  Search this
Western Maryland Railroad  Search this
Annapolis Waterworks  Search this
Steam engineering  Search this
Harlem River Bridge Commission  Search this
Washington (D.C.) -- 19th century  Search this
Reservoirs  Search this
Patents  Search this
Genre/Form:
Photographs
Letterpress copybooks
Blueprints
Diaries
Drawings
Photographs -- 19th century
Cashbooks
Business records -- 19th century
Business letters
Notebooks
Topographic maps
Tax records
Technical drawings
Stock certificates
Technical literature
Photoengravings
Notes
Maps -- 19th century
Microfilms
Linen tracings
Letter books
Letters
Land titles
Legal documents
Sketches
Salted paper prints
Reports
Receipts
Plans (drawings)
Photostats
Photographic prints
Architectural drawings
Administrative records
Albumen prints
Albums
Annual reports
Booklets
Account books -- 19th century
Books -- 19th century
Family papers -- 18th century
Financial records -- 19th century
Diaries -- 19th century
Drawings -- 19th century
Cyanotypes
Correspondence -- 19th-20th century
Deeds
Printed material
Correspondence
Contracts
Harlem River Bridge
Photograph albums
Specifications
Christmas cards
Menus
Citation:
William R. Hutton Papers, dates, Archives Center, National Museum of American History
Identifier:
NMAH.AC.0987
See more items in:
William R. Hutton Papers
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep84f6824ce-7291-4ac4-ab0f-abaa2071815e
EDAN-URL:
ead_collection:sova-nmah-ac-0987
Online Media:

Engineer notebook,

Collection Creator:
Hutton, William R., 1826-1901  Search this
Container:
Box 27, Folder 36
Type:
Archival materials
Text
Date:
1887-1891
Collection Restrictions:
The collection is open for research. Gloves must be worn when handling unprotected photographs and negatives.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
William R. Hutton Papers, dates, Archives Center, National Museum of American History
See more items in:
William R. Hutton Papers
William R. Hutton Papers / Series 8: Professional Projects / 8.2: Hudson River Tunnel
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8388bd7e0-442d-4924-9244-4eb93be3cfc7
EDAN-URL:
ead_component:sova-nmah-ac-0987-ref135

Engineer notebook,

Collection Creator:
Hutton, William R., 1826-1901  Search this
Container:
Box 27, Folder 37
Type:
Archival materials
Text
Date:
1889-1890
Collection Restrictions:
The collection is open for research. Gloves must be worn when handling unprotected photographs and negatives.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
William R. Hutton Papers, dates, Archives Center, National Museum of American History
See more items in:
William R. Hutton Papers
William R. Hutton Papers / Series 8: Professional Projects / 8.2: Hudson River Tunnel
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep83203814e-059c-4544-b04e-3997d2a7d347
EDAN-URL:
ead_component:sova-nmah-ac-0987-ref136

Engineer notebook,

Collection Creator:
Hutton, William R., 1826-1901  Search this
Container:
Box 27, Folder 38
Type:
Archival materials
Text
Date:
1891
Collection Restrictions:
The collection is open for research. Gloves must be worn when handling unprotected photographs and negatives.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
William R. Hutton Papers, dates, Archives Center, National Museum of American History
See more items in:
William R. Hutton Papers
William R. Hutton Papers / Series 8: Professional Projects / 8.2: Hudson River Tunnel
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8125ca7fb-2f01-4b0d-ab76-3ba6314714bd
EDAN-URL:
ead_component:sova-nmah-ac-0987-ref137

Engineer notebook (for Walter Fox),

Collection Creator:
Hutton, William R., 1826-1901  Search this
Container:
Box 27, Folder 39
Type:
Archival materials
Text
Date:
1891
Collection Restrictions:
The collection is open for research. Gloves must be worn when handling unprotected photographs and negatives.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
William R. Hutton Papers, dates, Archives Center, National Museum of American History
See more items in:
William R. Hutton Papers
William R. Hutton Papers / Series 8: Professional Projects / 8.2: Hudson River Tunnel
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep89e8a3dc8-9f14-436a-a7e3-fca081d3b4c6
EDAN-URL:
ead_component:sova-nmah-ac-0987-ref138

Magellan Systems Corporation GPS Records

Creator:
Magellan GPS  Search this
Extent:
12 Cubic feet (14 boxes)
Type:
Collection descriptions
Archival materials
Correspondence
Notebooks
Instructional materials
Design drawings
Photographs
Notes
Memorandums
Manuals
Videocassettes
Reports
Press releases
Advertisements
Clippings
Audio cassettes
Articles
Date:
1978-2005
bulk 1986-1998
Summary:
The Magellan Systems Corporation Records document various aspects of the development of several different Magellan GPS devices through engineering, research, design, manufacturing, and marketing records. Magellan Systems Corporation introduced the first hand-held differential GPS product and the conpany's focus was on research, product engineering, and design activities for GPS receivers. The collection includes correspondence and internal company reports and memoranda; design drawings; research notes; engineering notebooks, technical notes, schematics; photographs, slides and negatives; video and audiocassettes; advertisements; product literature, magazine articles and newspaper clippings; press releases; and user guides and manuals.
Scope and Contents:
The Magellan Systems Corporation Records document various aspects of the development of Magellan GPS devices, including the engineering, research, design, manufacturing, and marketing of the devices. The collection includes correspondence and internal company reports and memoranda; design drawings; research notes; engineering notebooks, technical notes, schematics; photographs, slides and negatives; video and audiocassettes; advertisements; product literature, magazine articles and newspaper clippings; press releases; and user guides and manuals. In Series 1, Operational Materials, Subseries 3, Weekly Reports, 1988-1996, provides an excellent overview of the issues facing the company and what actions/decisions were made and in Series 3, Engineering and Product Development Materials, Subseries 8, Technical Product Development Seminars provide a good foundation for understanding what the product development staff accomplished.

The core team of players who developed, tested and brought to market the GPS devices included: Janice Jones Blankenhorn, Gary Barta, John Foukos, Randy Hoffman, Norm Hunt, Sab Ifune, Don Rea, Dennis Rich, Ed Tuck, Jon Vavrus, Larry Weill, Val Fife Wong, and James Yuan. The majority of the core team were software and hardware engineers as well as mechanical designers. Their energy, enthusiasm, vision, and unwillingness to fail produced the first handheld commercial GPS receiver in 1989 and Magellgan was the first company to make GPS devices affordable to consumers.

Series 1, Operational Materials, 1988-1993, is divided into four subseries: Subseries 1, Organizational Materials, 1988-1994; Subseries 2, Strategic and Operating Plans, 1989-1995; Subseries 3, Weekly Reports, 1988-1996; and Subseries 4, Company Newsletters, 1991-1992.

Subseries 1, Organizational Materials, 1988-1994, consists of an organizational chart detailing Magellan's corporate structure, a document discussing the communication and functional objectives of the company, and a company Christmas card. The Orbital Sciences Corporation profile was prepared by Alex. Brown and Sons Incorporated and provides an overview of the ORBCOMM system technology, a two-way data-only personal communications service.

Subseries 2, Strategic and Operating Plans, 1989-1995, consists of a variety of strategic and operational plans for the company. The plans are arranged chronologically.

Subseries 3, Weekly Reports, 1988-1996, consists of handwritten and typescript reports primarily from Randy Hoffman, president and CEO of Magellan and Gary Barta, Senior Engineer and Vice President of engineering. The reports document issues that include, personnel issues, product development, technological developments, military orders, investments, marketing and sales, financial issues, orders, resource activities, and future activities. The subseries is arranged chronologically and provides an excellent overview of the issues facing the company and what actions/decisions were made.

Subseries 4, Company Newsletters, 1991-1992, consists of two external company newsletters, The Global Navigator, 1991 and The Magellan Explorer, 1992. The Global Naviagtor was created for the marine market and was sent to all NAV PLUS owners as well as dealers.

Series 2, Correspondence, 1989-1994 and undated, is divided into two subseries: Subseries 1, Customer Correspondence, 1989-1993 and Subseries 2, Business Correspondence, 1989-1994 and undated. The customer-related correspondence consists of letters from users of Magellan GPS units (primarily maritime-related) and their feedback about the product. Some color photographs are included. The business-related correspondence consists of records of conversations, invoices, suggestions for strategic planning, correspondence between Randy Hoffman and the Boundary Found, and the agreement and plan for the merger of Orbital Sciences Corporation and Magellan Corporation in 1994.

Series 3, Engineering and Product Development Materials, 1978-1998, consists of ten subseries: Subseries 1, Product Development, 1989-1994; Subseries 2, Engineering Notebooks, 1987-1996; Subseries 3, Technical Notes, 1978-1994; Subseries 4, Breadboard Design, 1986-1994; Subseries 5, First Generation (NAV 1000/NAV 1200), 1985-1994; Subseries 6, Second Generation, 1988-1996; Subseries 7, Third Generation, 1986-1994; Subseries 8, Swiss Army Chip (SAC) Development, 1987-1995; Subseries 9, Technical Products Development Seminars, 1997-1998; Subseries 10, Specifications, 1992-1994 and Subseries 11, TriQuint Semiconductor Materials, 1986-1992.

Subseries 1, Product Development, 1989-1994, consists of documentation related to product development at Magellan. There are sketches for the third generation of GPS products, descriptive materials for the Meridian Plus and third generation receiver, testing data from the Forest Service using GPS in the wilderness near Missoula, Montana, and position description for the director of product engineering at Magellan outlining the skills and responsibilities.

Subseries 2, Engineering Notebooks, 1987-1996, consists of bound, paginated and handwritten notebooks belonging to two Magellan engineers, Janice Jones Blankenhorn, senior software engineer and Don Rea, director of engineering. Each of Don Rea's notebooks contains a page of handwritten annotations made in 2010 describing the contents. Don Rea's 1987 notebook contains documentation on the original Magellan breadboard, custom digital chip (SAC 1), and the digital board design and test, all of which deal with the first generation of the NAV 1000. Rea's 1986 and 1988 notebook contains information about the first generation of software used, GaAS chips, radio frequency (RF) board, second generation (NAV 5000), design work for Swiss Army Chips (SACs), SAC2 digital chip, SAC2B, and the SAC3 chip. Don Rea's 1993-1995 notebook contains notes on the testing of the SAC5, SAC5M and SAC6 custom digital integrated circuit for the third generation.

Subseries 3 Technical Notes, 1978-1994, consists of handwritten and typescript notes of Gary Barta, Janice Jones Blankenhorn, John Foufos, Janice Intyre, Don Rea, Larry Weill, and James Yuan. Where possible, file level information about what the notes relate to and the Magellan staff member who wrote the notes is listed. Much of the documentation consists of equations, algorithms, sketches, block diagrams, and narrative describing processes and research. The subseries is loosely arranged chronologically.

Subseries 4, Breadboard Design, 1986-1994, consists of memoranda, technical notes, drawings, and sketches detailing the radio frequency breadboard design. Magellan's first-generation breadboard, circa 1987, was developed by the team of Janice Jones Blankenhorn, Val Fife Wong, Ed Tuck, Norm Hunt, Sab Ifune, Gary Barta, Larry Weill, Randy Hoffman, and Don Rea.

Subseries 5, First Generation (NAV 1000/NAV 1200), 1985-1994, consists of technical notes, design notes, memoranda, drawings, and blueprints documenting the development of the first generation (primarily the NAV 1000/NAV 1200), handheld GPS unit produced by Magellan. The first generation of GPS were single channel receivers and were quite simple. The NAV 1000 was 8.75" x 3.5" x 2.25" and weighed only 1.5 pounds. The NAV 1000 converted GPS satellite information into a satellite/navigation (sat/nav) positioning. It used Gallium arsenide (GaAs) a compound of the elements gallium and arsenic, and monolithic microwave integrated circuit (MMIC) technology to reduce its size and power consumption. GaAs is a semiconductor used in the manufacture of devices such as microwave frequency integrated circuits, monolithic microwave integrated circuits, infrared light-emitting diodes, laser diodes, solar cells, and optical windows. The device sold for approximately $3,000 dollars.

Subseries 6, Second Generation, 1988-1996, consists of technical notes, design notes, memorandums, drawings, and blueprints documenting the development of the second generation (primarily the NAV 5000) handheld GPS unit produced by Magellan. The NAV 5000 used five channels working simultaneously to locate and collect data from GPS satellites. The units GaAs circuitry rapidly processed the data received from the satellites to compute current location, altitude, velocity and navigation in under one minute. The NAV 5000 was designed primarily for marine use. Other second generation products included: OEM Brain, OEM 1/2 Brain, Nav 500 Pro, NAV 100M5, Skaynav, Fieldpro, NAV 5200 PM, NAV 5000A, NAV 5000D, DX, DLX, Pro mark V, and the Map 7000.

Subseries 7, Third Generation, 1986-1994, consists of technical notes for the development of the third generation (primarily Meridian and Trailblazer models) of Magellan GPS devices. Third generation models were intended for the lower end of the GPS market and were compact hand-held (size, weight, battery life) and a retail price that was reasonable. Other third generation devices included: the meridian, Trailblazer, AIV10 OEM, Skatblazer, NAV 6500 PM, Meridian/TB/SB XL, NAV 1200 Pm, NAV 1200 XL PM, NAV DLX 10, Promark X, and the Pro Mark X-CM.

Subseries 8, Swiss Army Chip (SAC) Development, 1987-1995, consists of technical notes, diagrams and drawings, and specifications for the development of a digital chip used in Magellan GPS products. Don Rea and Norm Hunt of Magellan are credited with naming the chip. The chip combined several elements--GPS DPS channels, correalators, real time clock, alarm timer, interval timer, keyboard interface, display interface, precise timing, power sequencing, memory decoding, code generators, and beeper driver, to name a few--which allowed the development team reduce the overall power, size, and cost of the chip. Magellan outsourced the manufacture of the SAC.

Subseries 9, Technical Products Development Seminars, 1997-1998, consists of documentation for nine seminars in a series of technology seminars initiated by the product develpment group at Magellan. The seminars were created to keep all staff up to date on past, present, and future technology developments at Magellan. The nine seminars cover the history of Magellan GPS technology and address specific areas of development such as antennas, circuits, signal processing, software, navigation needs, and radio frequency. Other information includes tables providing comparisons for the first, second, and third generations, timelines, SAC chip characteristics, and product shipping dates. The seminars provide a good foundation for understanding what the product development staff accomplished. Researchers should consult Series 8 which documents some of the technical seminars.

Subseries 10, Specifications, 1992-1994, consists of preliminary, functional, and system requirements describing technical characteristics for several Magellan products.

Subseries 11, TriQuint Semiconductor Materials, 1986-1992, consists of materials documenting TriQuint Semiconductor, Inc.'s work. TriQuint was a division of Tektroninix, Inc., a manufacturer of analog and mixed signal gallium arsenide (GaAs) integrated circuit products. TriQuint supplied custom radio frequency (RF) and Gallium arsenide (GaAs) chips for Magellan's hand-held GPS systems and tested its chips. Documentation includes trip summaries and observations to TriQuint by Don Rea, a Magellan engineer as well as technical drawings, memorandums, development schedules, invoices, purchase orders, and tests results, production quantity and costs, and specifications. In 1986, Don Rea met Gary Barta, then principal engineer at TriQuint through his frequent visits to the company. Barta led the engineeering development of the an integrated circuit which combined the GPS L-band low-noise pre-amplifier, UHF local oscillator, down converter and high speed digital divisers on a single gallium-arsenide chip. Nothing like this had been done before for a cost senstive commerical application. Barta later joined Magellan in November 1988 as Vice President of Engineering and made the chip he had designed actually work in the environment of a hand-held product.

Series 4, Marketing and Promotional Materials, 1985-1997, is divided into six subseries: Subseries 1, Market Research, 1985-1993 and undated; Subseries 2, Product Literature, circa 1990s; Subseries 3, Advertisements, 1988-1995 and undated; Subseries 4, Press Releases, 1988-1996; Subseries 5, Presentation Materials, 1990-[1997?] and undated; and Subseries 6, Newspaper and Magazine Clippings, 1988-1996 and undated. The series consists of product literature, advertisements, press releases, presentation materials, and newspaper and magazine clippings about Magellan products as well as competitors.

Subseries 1, Market Research, 1985-1993 and undated, consists of market research data in the form of reports prepared by Merrill Lynch, Simmons Market Research Bureau, J & H Instruments, and others, directed interviews and focus group data. There are directed interviews and discussion documentation from 1986 with Coast Guard Rescue, survival trainers, surveyors, hunters, harbor patrols, expeditionists, and mountaineer trainers providing detailed feedback into experiences with the product. The focus group information consists of transcribed interviews, survey text, selection criteria, participant lists, invoices, and technical drawings and mock-ups for the marine, outdoor and hunting markets.

Subseries 2, Product Literature, circa 1990s, consists of one file folder of product information sheets detailing specifics about Magellan products such as the NAV 1000, NAV 5000DX, NAV 1000 PRO/Geolink, NAV 5200, NAV 1000M, Meridian GPS, ProMARK V, GPS 2000, and the Global Satellite Communicator (GSC) 100.

Subseries 3, Advertisements, 1988-1995 and undated, consists of point of purchase ads, artwork and transfer designs for Magellan products. There are some oversize drawings (copies of blueprints) with the transfer design materials.

Subseries 4, Press Releases, 1988-1996, consists of press releases and one press kit containing biographies of staff members, black-and-white prints of Randy D. Hoffman, President and Chief Executive Officer, prints of the NAV 1000, and press releases introducing the NAV 1000. The marine outdoor press releases also contain 1993 dealer price lists for the Trailblazer, Meridian, NAV 5000DX, NAV 5200DX, and the mimimum advertised price policy for 1993.

Subseries 5, Presentation Materials, 1990-[1997?], consists primarily of staff presentation materials used to promote Magellan products. There is one bound presentation, Magellan Systems Corporation Management Presentation, undated, prepared by Merrill Lynch, that provides documentation about the company (an overview), market segments, competition, sales and marketing, product development, technology, manufacturing, and a financial overview.

Subseries 6, Newspaper and Magazine Clippings, 1988-1996 and undated, consists primarily of magazine articles. The articles appeared in a variety of publications and included Defense Electronics, Southern Boating, Maritime Reporter, Cruising World, Boating the Journal of the Sport, International Defense Review, and Navigation News. The subseries is arranged chronologically.

Series 5, User Guides and Manuals, 1989-2005 and undated, consists of training, reference, and user guides for the consumer who purchased Magellan products. The guides are primarily spiral bound and some are annotated. Multiple copies of some years exist. The series is arranged chronologically.

Series 6, Financial Materials, 1991-1995 and undated, consists of stock information, a Securities and Exchange Commission registration statement, correspondence, registration rights agreements, preferred stock purchase agreements, agreement and plan of merger documents between Magellan Corporation and Orbital Sciences Corporation (November 1994), and two floppy discs (3 1/2" and 5") containing information about the company and its staff.

Series 7, Photographs and Slides, 1987-1995 and undated, consists of slides, negatives, transparencies, and color and black-and-white prints of Magellan products. Many of the images document early product concepts, and there are some promotional and publicity materials. There is one folder of photographs with images of employees from 1989.

Series 8, Audiovisual Materials, 1991-1998 and undated, consists of 1/2" VHS, BETA Cam SP, and 8 mm video cassettes documenting technical seminars presented by Magellan Systems Corporation staff and instances of Magellan products featured in news segments. Researchers consult the technical seminar documentation in Series 3, Engineering and Product Development Materials. The series is arranged chronologically.
Arrangement:
Collection arranged into eight series.

Series 1, Operational Materials, 1988-1993

Subseries 1, Organizational Materials, 1988-1994

Subseries 2, Strategic and Operating Plans, 1989-1995

Subseries 3, Weekly Reports, 1988-1996

Subseries 4, Company Newsletters, 1991-1992

Series 2, Correspondence, 1989-1994 and undated

Series 3, Engineering and Product Development Materials, 1978-1998

Subseries 1, Product Development, 1989-1994

Subseries 2, Engineering Notebooks, 1987-1996

Subseries 3, Technical Notes, 1978-1994

Subseries 4, Breadboard Design, 1986-1994

Subseries 5, First Generation (NAV 1000/NAV 1200), 1985-1994

Subseries 6, Second Generation (NAV 5000), 1988-1996

Subseries 7, Third Generation, 1986-1994

Subseries 8, Swiss Army Chip (SAC) Development, 1987-1995

Subseries 9, Technical Product Development Seminars, 1997-1998

Subseries 10, Specifications, 1992-1994

Subseries 11, TriQuint Semiconductor, 1986-1992

Series 4, Marketing and Promotional Materials, 1985-1997

Subseries 1, Market Research, 1985-1993 and undated

Subseries 2, Product Literature, circa 1990s

Subseries 3, Advertisements, 1988-1995 and undated

Subseries 4, Press Releases, 1988-1996

Subseries 5, Presentation Materials, 1990-[1997?]

Subseries 6, Newspaper and Magazine Clippings, 1988-1996 and undated

Series 5, User Guides and Manuals, 1989-2005 and undated

Series 6, Financial Materials, 1991-1995 and undated

Series 7, Photographs and Slides, 1987-1995 and undated

Series 8, Audiovisual Materials, 1991-1998 and undated
Biographical / Historical:
Ed Tuck of the Boundary Fund, a venture capital firm specializing in technologies founded the Magellan Systems Corporation in 1986 and served as its director from 1986 to 1993. Tuck assembled the initial team of Norm Hunt, Larry Weill, Val Wong, and Sab Ifune to conduct a feasibility study in early 1986 to pursue commercial markets for products based on global positioning system (GPS) technology. Magellan introduced the first handheld commercial GPS receiver in 1989 and was the first company to make GPS devices affordable to consumers. Magellan introduced the first handheld commercial GPS receiver in 1989 and was the first company to make GPS devices affordable to consumers. The company successfully introduced GPS products into the marine, professional, military and automotive and general aviation markets.

The Global Positioning System (GPS) began as a United States Department of Defense Program in the 1960s with a navy system known as Transit (first satellite navigation system). Two other projects soon followed, Timation (satellite to broadcast accurate time reference) and Air Force Project 612B, which began in the 1970s. In 1973, the development of the Navigation Signal Timing and Ranging Global Positioning System (NAVSTAR) began under the management of the Air Force. Designed by the military, the system provided twenty-four positioning satellites under all- weather conditions using passive (non-transmitting) receivers. This kept a user's presence from being detected as a result of the receiver. Although primarily for military use, the system also offered a less-precise coded signal for civilian use.

GPS uses a group of twenty-four earth-orbiting satellites which broadcast continuously. The data being broadcast can be processed by a portable receiver to determine a user's position, velocity and time. GPS has three parts: 1) space part with twenty-four satellites; 2) ground part with monitor and 3) user part with receivers that process the signals and calculate position.

In the spring of 1986, the Magellan team published a specification for a custom mixed signal RF (radio frequency) integrated circuit and by fall 1986, had a breadboard (used in prototyping of electronics) and began software development and testing. Magellan focused its research, product engineering, and design activities on the development of GPS receivers that were application-specific, software-intensive, reliable, lower power, easy to use, and affordable.

From 1986 to 1988, the Boundary Fund provided the venture capital for feasibility studies and the initital product design. By 1988, the company occupied its first stand-alone facility in Monrovia, California with thirty-five employees. In May 1989, the company's first product, the NAV 1000, shipped, and in that same year, the company entered the military market with the NAV 1000M. The company entered the professional market in January 1990 with the NAV 1000 PRO, the world's first hand-held GPS product. By 1991, Magellan moved to a new facility in Dimas, California and introduced advanced five-channel technology. It also incorporated in the United Kingdom (UK) as Magellan Systems to handle product distribution in the rest of the UK and Europe.

The SkyNAV 5000 was introduced in 1992 for the general aviation market, and in the same year, hand-held differential GPS technology for the marine market appeared. Magellan was purchased by Orbital Sciences Corporation in 1994. In 2001, Thales Group purchased the Magellan division of Orbital Sciences, and the company became known as Thales Navigation. In 2006, a private equity firm, Shah Capital Partners, and other investors purchased Thales Navigation, and the company was officially renamed Magellan Navigation. Magellan (also known as MiTAC Digital Corporation) is a wholly-owned subsidiary of MiTAC International Corporation and promotes and sells products and services under the Magellan brand name. Magellan is headquartered in Santa Clara, California.
Related Materials:
The Division of Work and Industry holds related artifacts (GPS receivers, computer electronics boards, computer chips, antennas, packaging, components, circuit boards, keyboards, a Swiss Army Chip (SAC), and receiver brackets). See Accession numbers 2010.0117; 2010.0118; 2010.0151; 2010.0152; 2010.0153; 2010.0154 and 2010.0155.
Provenance:
Donated to the Archives Center in 2010, by MiTAC Digital Corporation through Michael Williams, Director of Marketing and Gary Barta, Janice Itnyre, Jean Tuck McGregor, Donald Rea, Edward F. Tuck, Lawrence R. Weill, and James P. White.
Restrictions:
Collection is open for research but is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Topic:
Navigation  Search this
Navigation equipment and supplies  Search this
Global Positioning System  Search this
GPS receivers  Search this
Satellites  Search this
Genre/Form:
Correspondence -- 1950-2000
Notebooks
Correspondence -- 2000-2010
Instructional materials
Design drawings
Photographs -- 1980-2000
Notes
Photographs -- Black-and-white negatives -- 2000-2010
Photographs -- Black-and-white negatives -- 1950-2000
Memorandums -- 1950-2000
Manuals
Memorandums -- 2000-2010
Videocassettes
Reports
Press releases
Reports -- 2000-2010
Advertisements -- 1980-2000
Reports -- 1950-2000
Photographs -- 2000-2010
Clippings -- 2000-2010
Photographs -- Color transparencies -- 2000-2010
Photographs -- Color transparencies -- 1950-2000
Audio cassettes -- 1990-2000
Audio cassettes -- 1980-1990
Clippings -- 1950-2000
Audio cassettes -- 2000-2010
Articles
Advertisements -- 2000-2010
Citation:
Magellan Systems Corporation GPS Records, Archives Center, National Museum of American History, Smithsonian Institution.
Identifier:
NMAH.AC.1214
See more items in:
Magellan Systems Corporation GPS Records
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep827a765bf-f29b-450e-89c1-91d8e5777a4a
EDAN-URL:
ead_collection:sova-nmah-ac-1214
Online Media:

Engineering Notebooks

Collection Creator:
Magellan GPS  Search this
Type:
Archival materials
Date:
1987-1996
Scope and Contents:
Subseries 2, consists of bound, paginated and handwritten notebooks belonging to two Magellan engineers, Janice Jones Blankenhorn, senior software engineer and Don Rea, director of engineering. Each of Don Rea's notebooks contains a page of handwritten annotations made in 2010 describing the contents. Don Rea's 1987 notebook contains documentation on the original Magellan breadboard, custom digital chip (SAC 1), and the digital board design and test, all of which deal with the first generation of the NAV 1000. Rea's 1986 and 1988 notebook contains information about the first generation of software used, GaAS chips, radio frequency (RF) board, second generation (NAV 5000), design work for Swiss Army Chips (SACs), SAC2 digital chip, SAC2B, and the SAC3 chip. Don Rea's 1993-1995 notebook contains notes on the testing of the SAC5, SAC5M and SAC6 custom digital integrated circuit for the third generation.
Collection Restrictions:
Collection is open for research but is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
Magellan Systems Corporation GPS Records, Archives Center, National Museum of American History, Smithsonian Institution.
Identifier:
NMAH.AC.1214, Subseries 3.2
See more items in:
Magellan Systems Corporation GPS Records
Magellan Systems Corporation GPS Records / Series 3: Engineering and Product Development Materials
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep840a42479-61ea-4314-b73c-eae65388de66
EDAN-URL:
ead_component:sova-nmah-ac-1214-ref224

Janice Jones

Collection Creator:
Magellan GPS  Search this
Container:
Box 1, Folder 32
Type:
Archival materials
Date:
1987 July-1988 March
Collection Restrictions:
Collection is open for research but is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Collection Rights:
Collection items available for reproduction, but the Archives Center makes no guarantees concerning intellectual property rights. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection Citation:
Magellan Systems Corporation GPS Records, Archives Center, National Museum of American History, Smithsonian Institution.
See more items in:
Magellan Systems Corporation GPS Records
Magellan Systems Corporation GPS Records / Series 3: Engineering and Product Development Materials / 3.2: Engineering Notebooks
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8bd6579e1-6216-4091-b4da-94e7481a94bd
EDAN-URL:
ead_component:sova-nmah-ac-1214-ref225

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