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equitorial armillary sphere (replica)

Maker:
L. C. Eichner Instruments  Search this
Measurements:
overall: 88 in x 76 in x 83 in; 223.52 cm x 193.04 cm x 210.82 cm
Object Name:
Equitorial Armillary Sphere (Replica)
ID Number:
PH.321830
Catalog number:
321830
Accession number:
244363
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ad-ef12-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1187570

6 meter bar

Measurements:
overall: 8 5/8 in x 6 11/16 in x 240 in; 21.9075 cm x 16.98625 cm x 609.6 cm
Object Name:
6-meter Bar
6 meter bar
Credit Line:
Coast & Geodetic Survey, Department of Commerce
ID Number:
PH.285228
Accession number:
57456
Catalog number:
285228
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-73b9-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1850855
Online Media:

6 meter bar

Measurements:
overall: 7 1/8 in x 3 in x 233 1/2 in; 18.0975 cm x 7.62 cm x 593.09 cm
Object Name:
6-meter Bar
6 meter bar
Credit Line:
Coast & Geodetic Survey, Department of Commerce
ID Number:
PH.285230
Accession number:
57456
Catalog number:
285230
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-73ba-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1850860
Online Media:

6 meter bar

Measurements:
overall: 8 7/8 in x 241 1/4 in x 8 in; 22.5425 cm x 612.775 cm x 20.32 cm
Object Name:
6-meter Bar
6-meter bar
6 meter bar
Credit Line:
Coast & Geodetic Survey, Department of Commerce
ID Number:
PH.285227
Accession number:
57456
Catalog number:
285227
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-7c17-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1850923
Online Media:

Grace Murray Hopper Collection

Creator:
Hopper, Grace Murray, 1906-1992  Search this
Former owner:
National Museum of American History (U.S.). Division of Physical Sciences  Search this
Names:
Remington Rand.  Search this
Extent:
2.5 Cubic feet (7 boxes, 1 map-folder)
Type:
Collection descriptions
Archival materials
Articles
Technical notes
16mm films
Videotapes
Photographs
Date:
1944-1965
Summary:
Papers and photographs of Grace Murray Hopper (1906-1992) computer and Naval pioneer.
Scope and Contents:
The material includes technical notes, operating instructions and descriptions relating to projects which Hopper participated in at Harvard during and after World War II and later in the private sector. These projects involved the creation of the Navy's Mark I, II and III "mechanical calculators" (the fore runners of today's computers) and the UNIVAC and ENIAC civilian models. The photographs document both equipment and Hopper with her colleagues at work and on social occasions. There are numerous published articles and memoranda by Hopper and others on various technical aspects of computers. Clippings of newspaper and magazine articles relating to computers and their development are also included, as well as periodicals and brochures. A "humor file" contains jokes and anecdotes collected by Hopper.

Much of the material is annotated by Hopper, primarily through notations on 3 x 5 white slips of paper. Some of the annotations by Elizabeth Luebbert, who served as a summer research assistant in the Museum's Computer History Project.
Arrangement:
The collection is divided into eleven series.

Series 1: Technical Documents, 1944-1949

Series 2: Photographs of Mark II, 1948

Series 3: Photographs at Harvard, 1944-1945

Series 4: Reports and Articles, 1946-1948

Series 5: Eckert-Mauchly Computer Corporation, 1949-1965

Series 6: Compiling Routines, 1952-1954

Series 7: Press Clippings, 1944-1953

Series 8: Periodicals and Brochures, 1950-1953

Series 9: Humor file, 1944-1953

Series 10: Machine Tape, undated

Series 11: Audiovisual Materials, undated
Biographical / Historical:
Grace Murray Hopper (1906-1992) obtained her Ph.D. in mathematics from Yale University in 1934. She was an associate professor of mathematics at Vassar College when she joined the Women's Reserve of the United States Navy, Women Accepted for Volunteer Emergency Service (WAVES) in 1944 and was assigned to the computing project at Harvard University. She served under Commander Howard H. Aiken as a Wave until 1946, and remained at Harvard's Computation Laboratory as a research fellow until 1949. In that year she joined the Eckert-Mauchly Computer Corporation as a senior mathematician. When Eckert-Mauchly became a division of Remington Rand, Hopper remained as senior programmer, a title she retained until 1959. Subsequently, she served as systems engineer and director of automatic programming development (1959-1964) and staff scientist in systems programming (1964-1971) for the UNIVAC division of Sperry Rand Corporation. Hopper retired from UNIVAC in 1972, having returned to active service in the U.S. Navy from which she eventually retired with the rank of Rear Admiral.
Related Materials:
Materials at the Archives Center

Computer Oral History Collection (AC0196)

This collection contains five oral history interviews with Grace Murray Hopper conducted on: July 1, 1968; November 1, 1968; January 7, 1969; February 4, 1969; and July 5, 1972.
Provenance:
Grace Murray Hopper donated her materials to the National Museum of American History, Section of Mathematics in 1967 and 1968. The majority of the collection was donated through the Museum's Computer Oral History Project in 1972.
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.
Occupation:
Computer programmers  Search this
Topic:
Computers  Search this
Computer programming  Search this
Computers and women  Search this
Mathematicians  Search this
Systems engineering  Search this
Univac computer  Search this
Genre/Form:
Articles -- 20th century
Technical notes
16mm films
Videotapes
Photographs -- 20th century
Citation:
Grace Murray Hopper Collection, 1944-1965, Archives Center, National Museum of American History
Identifier:
NMAH.AC.0324
See more items in:
Grace Murray Hopper Collection
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8a1e4e5a0-fbd1-4ece-ad0c-dd83803a6168
EDAN-URL:
ead_collection:sova-nmah-ac-0324
Online Media:

Science Vol. 104, No. 2712 Friday, 20 December 1946 (pp. 581-608): NRC [National Research Council] News (p. 595) Division of Physical Sciences announces formation of new Committee on High-Speed Calculating Machines. Chairman: John von Neumann, Members:...

Collection Creator:
Hopper, Grace Murray, 1906-1992  Search this
Container:
Box 3, Folder 10
Type:
Archival materials
Collection Restrictions:
Collection is open for research.
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:
Grace Murray Hopper Collection, 1944-1965, Archives Center, National Museum of American History
See more items in:
Grace Murray Hopper Collection
Grace Murray Hopper Collection / Series 4: Reports and Articles
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep8f97662c4-4e4d-42fe-a022-502c296c4347
EDAN-URL:
ead_component:sova-nmah-ac-0324-ref242

heat reflectors

Physical Description:
brass (overall material)
Measurements:
overall: 3 1/2 in x 17 in; 8.89 cm x 43.18 cm
Object Name:
heat reflectors
Credit Line:
Union College
ID Number:
PH.325779.02
Catalog number:
325779.02
Accession number:
255505
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng40195e327-c19e-4160-a160-915bd9d4d65d
EDAN-URL:
edanmdm:nmah_2014128
Online Media:

Toothbrush Handle

Measurements:
overall: 5/16 in x 1/2 in x 6 in; .79502 cm x 1.27 cm x 15.24 cm
Object Name:
handle, toothbrush
toothbrush, nylon
ID Number:
ZZ.RSN79634Z31
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-0e88-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1827514
Online Media:

Toothbrush Handle

Measurements:
overall: 3/8 in x 1/2 in x 6 1/8 in; .9525 cm x 1.27 cm x 15.5575 cm
Object Name:
handle, toothbrush
toothbrush, nylon
ID Number:
ZZ.RSN79634Z30
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-0e8b-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1827520
Online Media:

Toothbrush Handle

Measurements:
overall: 3/8 in x 5/16 in x 5 1/8 in; .9525 cm x .79502 cm x 13.0175 cm
Object Name:
handle, toothbrush
toothbrush, nylon
ID Number:
ZZ.RSN79634Z29
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-0e8c-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1827521
Online Media:

Toothbrush Handle

Measurements:
overall: 3/8 in x 1/2 in x 6 1/8 in; .9525 cm x 1.27 cm x 15.5575 cm
Object Name:
handle, toothbrush
toothbrush, nylon
ID Number:
ZZ.RSN79634Z27
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-0e8f-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1827525
Online Media:

Toothbrush Handle

Measurements:
overall: 3/8 in x 1/2 in x 6 1/4 in; .9525 cm x 1.27 cm x 15.875 cm
Object Name:
handle, toothbrush
toothbrush, nylon
ID Number:
ZZ.RSN79634Z28
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-0e90-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1827527
Online Media:

Duplex Pendulum Seismograph

Maker:
California Electrical Works  Search this
Physical Description:
wood (overall material)
paper (label on top of the instrument material)
brass (overall material)
Measurements:
overall: 27 1/8 in x 13 1/2 in x 11 3/4 in; 68.8975 cm x 34.29 cm x 29.845 cm
Object Name:
seismograph
Place made:
United States: California, San Francisco
Used:
United States: Ohio, Cleveland
Date made:
late 1880s
Credit Line:
Case Institute of Technology
ID Number:
PH.323669
Catalog number:
323669
Accession number:
251332
See more items in:
Medicine and Science: Physical Sciences
Measuring & Mapping
Science & Mathematics
Seismographs
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-1a63-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_996607

Leo H. Baekeland Papers

Creator:
Baekeland, L. H. (Leo Hendrik), 1863-1944  Search this
Names:
Bakelite Corporation  Search this
Nepera Chemical Co.  Search this
Extent:
15 Cubic feet (49 boxes)
Type:
Collection descriptions
Archival materials
Professional papers
Clippings
Laboratory notes
Personal correspondence
Photographs
Notebooks
Diaries
Date:
1976
1863 - 1968
Summary:
The papers document Leo H. Baekeland, a Belgian born chemist who invented Velox photographic paper (1893) and Bakelite (1907), an inexpensive, nonflammable, versatile plastic. The papers include student notebooks; private laboratory notebooks and journals; commercial laboratory notes; diaries; patents; technical papers; biographies; newspaper clippings; maps; graphs; blueprints; account books; batch books; formula books; order books; photographs; and correspondence regarding Baekeland, 1887-1943.
Scope and Contents:
Baekeland documented his life prolifically through diaries, laboratory notebooks, photographs, and correspondence. These constitute the bulk of the collection. The Bakelite company history is also incompletely documented in this collection through Baekeland's correspondence, the commercial laboratory notebooks, and some company ledgers.
Arrangement:
Series 1: Reference Materials, 1863-1868 and undated

Subseries 1.1: Biographical, 1880-1965

Subseries 1.2:Company History, 1910-1961

Subseries 1.3: Related Interests, 1863-1968 and undated

Series 2: Published and Unpublished Writings (by Leo H. Baekeland), 1884-1945

Series 3: Correspondence, 1888-1963 Subseries 3.1: Personal Correspondence, 1916-1943

Subseries 3.2: Charitable Donations, 1916-1938

Subseries 3.3: Family Correspondence, 1888-1963

Subseries 3.4: Clubs and Associations, 1916-1943

Series 4: Diaries, 1907-1943

Series 5: Reading and Lecture Notes, 1878-1886

Series 6, Laboratory Notebooks, 1893-1915

Series 7: Commercial Laboratory Notebooks, 1910-1920

Series 8: Bakelite Company, 1887-1945

Series 9, Patents, 1894-1940

Series 10: Bakelite Corporation Ledgers, 1910-1924; 1935; 1939

Series 11: Photographs, 1889-1950 and undated

Subseries 11.1: Photographs, 1889-1950 and undated

Subseries 11.2: Film Negatives, 1900-1941 and undated

Subseries 11.3: Photoprints, 1894-1941

Subseries 11.4: Stereographs, 1888-1902 and undated

Subseries 11.5: Film and Glass Plate Negatives, 1899-1900 and undated

Series 12: Audio Materials, 1976
Biographical / Historical:
Leo Hendrik Baekeland was an industrial chemist famous for his invention of Bakelite, the first moldable synthetic polymer, and for his invention of Velox photographic paper. Baekeland's career as an inventor and innovator was punctuated by an urge to improve existing technologies and a willingness to experiment both meticulously and daringly. Born in Ghent, Belgium in 1863, Baekeland was a distinguished chemistry student and became a young professor at the University of Ghent. He had a long standing interest in photography and sought to further photographic technology with his expertise in chemistry. In 1887 he obtained his first patent for a dry plate which contained its own developer and could be developed in a tray of water. With the support of a business partner/faculty associate, Jules Guequier, he formed a company named Baekeland et Cie to produce the plate, but the venture failed due to lack of capital.

On August 8, 1889, he married Celine Swarts, daughter of his academic mentor Theodore Swarts, Dean of the Faculty of Sciences at the University of Ghent. After his wedding he travelled to different countries using a traveling scholarship he had been awarded two years previously. His travels ended in the United States where he was offered a job researching chemical problems associated with manufacturing bromide papers and films with A. and H.T. Anthony and Company, a photographic supply producer. Leo and Celine Baekeland had three children: George, Nina and Jenny (1890-1895).

He left Anthony and Company in 1891 to be a consulting chemist. During that time he invented a photographic print paper using silver chloride which could be developed in artificial light instead of sunlight and thus offered more flexibility and consistency to photographers. In 1893, with financial support from Leonard Jacobi, a scrap metal dealer from San Francisco, he formed the Nepera Chemical Company in Yonkers, New York, to manufacture "gaslight" paper under the trade name Velox. The paper became quite popular and the company expanded its operations after its first three years. Finally, George Eastman bought the company for a reported $750,000 which afforded Baekeland the time to conduct his own research in a laboratory he set up on his estate, "Snug Rock," in Yonkers.

Baekeland worked on problems of electrolysis of salt and the production of synthetic resins. He was hired as a consultant to work with Clinton P. Townsend to perfect Townsend's patented electrolytic cell. Baekeland's work there contributed to the success of the Hooke Electrochemical Company which began in operations in Niagara Falls in 1905.

Simultaneously, in 1902 Baekeland began researching reactions of phenol and formaldehyde, and by 1907 was able to control the reactions and produce a moldable plastic (oxybenzylmethylenglycolanhydride) which he named Bakelite. Although the process was not perfected for another couple of years, Baekeland applied for a patent for Bakelite right away. He announced his discovery to the scientific community in 1909, and in 1910 formed the General Bakelite Company. Bakelite was a thermosetting resin that, unlike Celluloid became permanently solid when heated. It was virtually impervious to heat, acids, or caustic substances. It could be molded into a wide variety of shapes and was an excellent electric insulator that came to replace hard rubber and amber for electrical and industrial applications. It was also suitable for a wide variety of consumer products such as billiard balls, jewelry, pot handles, telephones, toasters, electric plugs, and airplane instrument knobs. Two companies challenged Bakelite with significant competition, Condensite Corporation of America and Redmanol Chemical Products Company. Bakelite finally merged with these two companies in 1922 to become the Bakelite Corporation. Union Carbide finally bought the corporation in 1939.

Baekeland sustained his interest in photography by taking numerous photographs throughout his lifetime. He also devoted much of his spare time to professional societies and received various honorary degrees and awards such as the Perkin Medal. He had several hobbies such as boating, wine and beer making, and, exotic plants. He also traveled extensively throughout the world, which is documented in his diaries and photographs.

Baekeland spent his final years mostly in his Coconut Grove, Florida home where he became increasingly eccentric until his mind failed him and he was institutionalized. He died in 1943 at the age of eighty.

Scope and Content: Baekeland documented his life prolifically through diaries, laboratory notebooks, photographs, and correspondence. These constitute the bulk of the collection. The Bakelite company history is also incompletely documented in this collection through Baekeland's correspondence, the commercial laboratory notebooks, and some company ledgers.
Related Materials:
Materials in the Archives Center

Albany Billiard Ball Company Records (AC0011)

Celluloid Corporation Records (AC0009)

J. Harry DuBois Collection on the History of Plastics (AC0008)

Materials at Other Organizations

The Hagley Museum and Library, Manuscripts and Archives Department in Delaware also several related collections including: the Directors of Industrial Research Records, 1929 -982; the Du Pont Viscoloid Company, Survey of the Plastics Field, 1932; The Society of the Plastics Industry, 1937-1987; the Roy J. Plunkett Collection, 1910-1994 (inventor of Teflon); and the Gordon M. Kline Collection, 1903.
Separated Materials:
The National Museum of American History, Division Medicine and Science has several artifacts associated with Baekeland including the original "Bakalizer" the apparatus in which Bakelite was first made. See accession numbers: 1977.0368; 1979.1179; 1981.0976; 1982.0034; 1983.0524; 1984.0138.
Provenance:
The bulk of the collection was donated to the National Museum of American History's Division of Physical Sciences in November, 1981, by Celine Karraker, Leo H. Baekeland's granddaughter.
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:
Phenolic resins  Search this
Travel -- Photographs  Search this
Chemists -- 1880-1970  Search this
Inventors -- 1880-1970  Search this
Plastics -- 1880-1970  Search this
Chemistry  Search this
Genre/Form:
Professional papers -- 1880-1970
Clippings -- 1880-1970
Laboratory notes
Personal correspondence -- 1880-1970
Photographs -- Black-and-white negatives -- Glass -- 19th-20th century
Notebooks -- 1880-1970
Diaries -- 1880-1970
Photographs -- Black-and-white photoprints -- Silver gelatin -- 19th-20th century
Photographs -- Black-and-white negatives -- Nitrate -- 19th-20th century
Citation:
Leo Baekeland Papers, Archives Center, National Museum of American History, Smithsonian Institution
Identifier:
NMAH.AC.0005
See more items in:
Leo H. Baekeland Papers
Archival Repository:
Archives Center, National Museum of American History
GUID:
https://n2t.net/ark:/65665/ep846e88df6-033d-4805-99e2-b308002a75f4
EDAN-URL:
ead_collection:sova-nmah-ac-0005
Online Media:

Heat Reflectors (2)

Measurements:
overall; stand, each: 15 in x 8 in; 38.1 cm x 20.32 cm
overall; reflectors, each: 2 1/2 in x 12 7/16 in; 6.35 cm x 31.59125 cm
Object Name:
heat reflectors
ID Number:
PH.325779.01
Accession number:
255505
Catalog number:
325779.01
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-888d-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1167072
Online Media:

Arc Lamp

Measurements:
overall: 9 3/4 in x 16 7/8 in x 12 1/8 in; 24.765 cm x 42.8625 cm x 30.7975 cm
Object Name:
Lamp, Arc
Credit Line:
National Bureau of Standards
ID Number:
PH.328874
Catalog number:
328874
Accession number:
278101
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746aa-4a1d-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1184332
Online Media:

Calorimeter

Maker:
L. Golaz  Search this
Measurements:
overall; pressure gauge: 12 in x 11 in x 6 1/2 in; 30.48 cm x 27.94 cm x 16.51 cm
overall; bath: 23 1/8 in x 17 1/4 in x 13 1/4 in; 58.7375 cm x 43.815 cm x 33.655 cm
overall; cage: 12 1/2 in x 5 1/2 in x 3 in; 31.75 cm x 13.97 cm x 7.62 cm
Object Name:
Calorimeter
Place made:
France: Île-de-France, Paris
Credit Line:
Baltimore Polytechnic Institute
ID Number:
PH.325752
Catalog number:
325752
Accession number:
257194
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ad-e829-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1187795
Online Media:

Calorimeter

Maker:
Gaertner Scientific Corporation  Search this
Measurements:
overall: 12 1/4 in x 12 7/16 in x 10 1/2 in; 31.115 cm x 31.59125 cm x 26.67 cm
Object Name:
Calorimeter
Place made:
United States: Illinois, Chicago
Credit Line:
Beloit College. Department of Physics and Astronomy
ID Number:
PH.334636
Catalog number:
334636
Accession number:
312090
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b3-633e-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1816710
Online Media:

Chronograph

Maker:
William Bond & Son  Search this
Measurements:
overall: 12 3/8 in x 25 in x 25 in; 31.4325 cm x 63.5 cm x 63.5 cm
Object Name:
chronograph, drum
Place made:
United States: Massachusetts, Boston
Date made:
early 1850s
Subject:
Science & Scientific Instruments  Search this
Credit Line:
Haverford College
ID Number:
1981.0745.09.01
Catalog number:
1981.0745.09.01
Accession number:
1981.0745
See more items in:
Medicine and Science: Physical Sciences
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746b2-4e37-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1813403
Online Media:

Telescope

Maker:
Zeiss, Carl  Search this
Measurements:
overall: 55 1/2 in x 59 in x 22 3/4 in; 140.97 cm x 149.86 cm x 57.785 cm
Object Name:
telescope (refracting)
telescope, refracting
telescope
Date made:
ca 1900
Credit Line:
U.S. Weather Bureau
ID Number:
PH.314578
Accession number:
204611
Catalog number:
314578
See more items in:
Medicine and Science: Physical Sciences
Science & Mathematics
Astronomy
Data Source:
National Museum of American History
GUID:
http://n2t.net/ark:/65665/ng49ca746ad-b536-704b-e053-15f76fa0b4fa
EDAN-URL:
edanmdm:nmah_1433300
Online Media:

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