Until the death of the Donor, SIA will notify the Donor prior to, or within 7 days after, the materials have been accessed for reseach. Contact reference staff for details.
Collection Citation:
Smithsonian Institution Archives, Accession 07-137, David H. DeVorkin Papers
These records are the official minutes of the Board. They are compiled at the direction of the Secretary of the Smithsonian, who is also secretary to the Board, after
approval by the Regents' Executive Committee and by the Regents themselves. The minutes are edited, not a verbatim account of proceedings. For reasons unknown, there are no
manuscript minutes for the period from 1857 through 1890; and researchers must rely on printed minutes published in the Annual Report of the Smithsonian Institution instead.
Minutes are transferred regularly from the Secretary's Office to the Archives. Minutes less than 15 years old are closed to researchers. Indexes exist for the period from
1907 to 1946 and can be useful.
Historical Note:
The Smithsonian Institution was created by authority of an Act of Congress approved August 10, 1846. The Act entrusted direction of the Smithsonian to a body called
the Establishment, composed of the President; the Vice President; the Chief Justice of the United States; the secretaries of State, War, Navy, Interior, and Agriculture; the
Attorney General; and the Postmaster General. In fact, however, the Establishment last met in 1877, and control of the Smithsonian has always been exercised by its Board of
Regents. The membership of the Regents consists of the Vice President and the Chief Justice of the United States; three members each of the Senate and House of Representatives;
two citizens of the District of Columbia; and seven citizens of the several states, no two from the same state. (Prior to 1970 the category of Citizen Regents not residents
of Washington consisted of four members). By custom the Chief Justice is Chancellor. The office was at first held by the Vice President. However, when Millard Fillmore succeeded
to the presidency on the death of Zachary Taylor in 1851, Chief Justice Roger Brooke Taney was chosen in his stead. The office has always been filled by the Chief Justice
since that time.
The Regents of the Smithsonian have included distinguished Americans from many walks of life. Ex officio members (Vice President) have been: Spiro T. Agnew, Chester A.
Arthur, Allen W. Barkley, John C. Breckenridge, George Bush, Schuyler Colfax, Calvin Coolidge, Charles Curtis, George M. Dallas, Charles G. Dawes, Charles W. Fairbanks, Millard
Fillmore, Gerald R. Ford, John N. Garner, Hannibal Hamlin, Thomas A. Hendricks, Garret A. Hobart, Hubert H. Humphrey, Andrew Johnson, Lyndon B. Johnson, William R. King, Thomas
R. Marshall, Walter F. Mondale, Levi P. Morton, Richard M. Nixon, Nelson A. Rockefeller, Theodore Roosevelt, James S. Sherman, Adlai E. Stevenson, Harry S. Truman, Henry A.
Wallace, William A. Wheeler, Henry Wilson.
Ex officio members (Chief Justice) have been: Roger B. Taney, Salmon P. Chase, Nathan Clifford, Morrison R. Waite, Samuel F. Miller, Melville W. Fuller, Edward D. White,
William Howard Taft, Charles Evans Hughes, Harlan F. Stone, Fred M. Vinson, Earl Warren, Warren E. Burger.
Regents on the part of the Senate have been: Clinton P. Anderson, Newton Booth, Sidney Breese, Lewis Cass, Robert Milledge Charlton, Bennet Champ Clark, Francis M. Cockrell,
Shelby Moore Cullom, Garrett Davis, Jefferson Davis, George Franklin Edmunds, George Evans, Edwin J. Garn, Walter F. George, Barry Goldwater, George Gray, Hannibal Hamlin,
Nathaniel Peter Hill, George Frisbie Hoar, Henry French Hollis, Henry M. Jackson, William Lindsay, Henry Cabot Lodge, Medill McCormick, James Murray Mason, Samuel Bell Maxey,
Robert B. Morgan, Frank E. Moss, Claiborne Pell, George Wharton Pepper, David A. Reed, Leverett Saltonstall, Hugh Scott, Alexander H. Smith, Robert A. Taft, Lyman Trumbull,
Wallace H. White, Jr., Robert Enoch Withers.
Regents on the part of the House of Representatives have included: Edward P. Boland, Frank T. Bow, William Campbell Breckenridge, Overton Brooks, Benjamin Butterworth,
Clarence Cannon, Lucius Cartrell, Hiester Clymer, William Colcock, William P. Cole, Jr., Maurice Connolly, Silvio O. Conte, Edward E. Cox, Edward H. Crump, John Dalzell, Nathaniel
Deering, Hugh A. Dinsmore, William English, John Farnsworth, Scott Ferris, Graham Fitch, James Garfield, Charles L. Gifford, T. Alan Goldsborough, Frank L. Greene, Gerry Hazleton,
Benjamin Hill, Henry Hilliard, Ebenezer Hoar, William Hough, William M. Howard, Albert Johnson, Leroy Johnson, Joseph Johnston, Michael Kirwan, James T. Lloyd, Robert Luce,
Robert McClelland, Samuel K. McConnell, Jr., George H. Mahon, George McCrary, Edward McPherson, James R. Mann, George Perkins Marsh, Norman Y. Mineta, A. J. Monteague, R.
Walton Moore, Walter H. Newton, Robert Dale Owen, James Patterson, William Phelps, Luke Poland, John Van Schaick Lansing Pruyn, B. Carroll Reece, Ernest W. Roberts, Otho Robards
Singleton, Frank Thompson, Jr., John M. Vorys, Hiram Warner, Joseph Wheeler.
Citizen Regents have been: David C. Acheson, Louis Agassiz, James B. Angell, Anne L. Armstrong, William Backhouse Astor, J. Paul Austin, Alexander Dallas Bache, George
Edmund Badger, George Bancroft, Alexander Graham Bell, James Gabriel Berrett, John McPherson Berrien, Robert W. Bingham, Sayles Jenks Bowen, William G. Bowen, Robert S. Brookings,
John Nicholas Brown, William A. M. Burden, Vannevar Bush, Charles F. Choate, Jr., Rufus Choate, Arthur H. Compton, Henry David Cooke, Henry Coppee, Samuel Sullivan Cox, Edward
H. Crump, James Dwight Dana, Harvey N. Davis, William Lewis Dayton, Everette Lee Degolyer, Richard Delafield, Frederic A. Delano, Charles Devens, Matthew Gault Emery, Cornelius
Conway Felton, Robert V. Fleming, Murray Gell-Mann, Robert F. Goheen, Asa Gray, George Gray, Crawford Hallock Greenwalt, Nancy Hanks, Caryl Parker Haskins, Gideon Hawley,
John B. Henderson, John B. Henderson, Jr., A. Leon Higginbotham, Jr., Gardner Greene Hubbard, Charles Evans Hughes, Carlisle H. Humelsine, Jerome C. Hunsaker, William Preston
Johnston, Irwin B. Laughlin, Walter Lenox, Augustus P. Loring, John Maclean, William Beans Magruder, John Walker Maury, Montgomery Cunningham Meigs, John C. Merriam, R. Walton
Moore, Roland S. Morris, Dwight W. Morrow, Richard Olney, Peter Parker, Noah Porter, William Campbell Preston, Owen Josephus Roberts, Richard Rush, William Winston Seaton,
Alexander Roby Shepherd, William Tecumseh Sherman, Otho Robards Singleton, Joseph Gilbert Totten, John Thomas Towers, Frederic C. Walcott, Richard Wallach, Thomas J. Watson,
Jr., James E. Webb, James Clarke Welling, Andrew Dickson White, Henry White, Theodore Dwight Woolsey.
overall: 23 7/8 in x 8 1/8 in x 4 in; 60.6425 cm x 20.6375 cm x 10.16 cm
Object Name:
violin
Place Made:
Italy: Lombardy, Cremona
Date made:
ca 1700
Related Publication:
Shinichi Yokoyama. The Decorated Instruments of Antonio Stradivari
Schubert, Franz. Franz Schubert: Quintet in C Major D. 956, Rondo in A Major D. 438
Auguste Franchomme & Frédéric Chopin. Franchomme & Chopin: Grand Duo Concertant; Caprices Op. 7, Nos. 2, 4, & 7; Two Nocturnes; Grande Valse, Op. 34.
Louis Spohr Octets, Sextet, Quintet
Felix Mendelssohn and Neils Gade. Mendelssohn & Gade: String Octet in E-flat Major, Op. 20; String Octet in F Major, Op. 17.
Georges Onslow. Georges Onslow: String Quintets Opp. 38, 39 & 40.
Luigi Boccherini. Boccherini: String Quintets, op.11, Nos. 4-6
Friedrich Dotzauer. Dotzauer: Quintet in D Minor, Op. 134; Six Pieces for 3 Violoncelli, Op. 104; Three Etudes for Violoncello Solo; Quartet for Violoncello Obbligato, 2 Violins, and Viola, Op. 64
Wolfgang Amadeus Mozart. Wolfgang Amadeus Mozart: The Complete String Quartets
National Museum of American History. Treasures of American History online exhibition
National Biomedical Research Foundation. Georgetown University Search this
Extent:
3 Cubic feet
Type:
Collection descriptions
Archival materials
Manuals
Patents
Photographs
Design drawings
Correspondence
Articles
Diagrams
Slides (photographs)
Notes
Motion pictures (visual works)
Albums
Date:
1972-1990
Summary:
The Robert Ledley Papers document the development of the first whole-body diagnostic imaging system, the Automatic Computerized Transverse Axial (ACTA) X-ray Scanner by Ledley in 1973. Also included is material relating to Ledley's company, Digital Science Information Corporation (DISCO), as well as the public and medical communities' reactions to the scanner.
Scope and Contents:
The Robert Ledley Papers document the development of the Automatic Computerized Transverse Axial (ACTA) X-ray Scanner, Ledley's company Digital Science Information Corporation (DISCO), as well as the public and medical communities' reactions to the scanner. The collection is arranged into nine series.
Series 1, ACTA Scanner I Schematics, 1973-1975; Series 2, ACTA Scanner I [Computer and Electronics], 1973; and Series 3, ACTA Scanner Tomograph Mechanics, 1973-1974 document the development and design of the ACTA scanner through drawings, notes, memoranda, and product information. More detailed information about these materials is located in the control file. All oversize drawings have been moved to flat storage for preservation concerns.
Series 4, ACTA Scanner Operating Instructions, 1975, is the operating manual created for the scanner used in Ledley's Georgetown lab.
Series 5, ACTA Articles, Clippings, and Press Releases, 1973-1979, is comprised of the aforementioned materials relating to the ACTA Scanner. Newspaper clippings illuminate the public's perception of the scanner, and scientific pieces highlight the medical community's reaction. Ledley's published articles on the scanner and related topics are included.
Series 6, Digital Information Science Corporation (DISCO) material, 1973-1981, documents Ledley's career and his company. A biographical sketch, list of articles, textbooks, and patents highlight Ledley's achievements. Invoices, receipts, contracts, and correspondence illuminate the financial situation at DISCO and the relationship between the company and Pfizer.
Series 7, Computer manuals, 1972-1975, documents the computer systems and software that were used with the ACTA Scanner.
Series 8, Photographic material, 1973-1978, includes an album of photographs depicting the ACTA Scanner and images of the scans it created. This album was disassembled due to preservation concerns. This series also includes a collection of slides featuring the scanner and related equipment in use and images of the scans it created. A detailed description of each photograph and slide is included in the control file.
Series 9, ACTA Scanner film, [1974?], is a 16mm narrated film describing the creation of the scanner, its components, the way they work, the scanner in use, and images of the scans produced.
Arrangement:
This collection is arranged into nine series.
Series 1, ACTA Scanner I Schematics, 1973-1975
Series 2, ACTA Scanner I [Computer and Electronics], 1973
Series 3, ACTA Scanner Tomograph Mechanics, 1973-1974
Series 4, ACTA Scanner Operating Instructions, 1975
Series 5, ACTA Articles, Clippings, and Press Releases, 1973-1979
Series 6, Digital Information Science Corporation (DISCO) material, 1973-1981, undated
Series 7, Computer manuals, 1972-1975
Series 8, Photographic material 1973-1978
Subseries 1, Photographs, 19731978
Subseries 2, Slides, 1974
Series 9, ACTA Scanner film [1974?]
Biographical / Historical:
Robert Steven Ledley was born in Flushing Meadows, New York in 1926. He received a D.D.S. degree from New York University College in 1948. While attending dental school, he simultaneously studied at Columbia University; he earned a M.A. in Theoretical Physics in 1949. He volunteered for the army and was sent to the U.S. Army Medical Field Service School in Fort Sam Houston, Texas.1 After completing his service, Ledley held a wide variety of research and academic positions in physics, electrical engineering, and medicine.
Ledley was a physicist within the External Control Group of the Electronic Computer Laboratory of the National Bureau of Standards from 1953-1954. He was an operations research analyst within the Strategic Division of the Operations Research Office at Johns Hopkins University from 1954-1956. Ledley went on to become an associate professor in the Department of Electrical Engineering at The George Washington University from 1956-1960 while also serving as a consultant mathematician at the National Bureau of Standards Data Processing Systems Division, 1957-1960. At this time, Ledley also worked part time at the National Research Council's National Academy of Sciences from 1957-1961. Ledley became the president of the National Biomedical Research Foundation in 1960, a position he still holds today. He was an instructor of pediatrics at the Johns Hopkins University School of Medicine from 1960-1963. He returned to The George Washington University's Department of Electrical Engineering in 1968 where he was a professor until 1970. He then became a professor in the Department of Physiology and Biophysics at the Georgetown University School of Medicine in 1970. In 1974, Ledley also became a professor in the Radiology Department at the Georgetown University Medical Center. In 1975, he became the director of the Medical Computing and Biophysics Division at Georgetown University Medical Center.
In 1972, the British company Electric and Musical Industries Limited (EMI) released a medical imaging machine for use on smaller areas of the body that were positioned under a water tank. In 1973, Ledley developed the Automatic Computerized Transverse Axial (ACTA) X-ray Scanner (US Patent #3,922,552). This machine was a whole-body diagnostic medical imaging system. He was awarded a grant from the National Institutes of Health for an engineering equipment project, but the money was never received due to budget cuts. Ledley looked elsewhere for funding. He consulted with Georgetown staff and discovered a neurosurgeon had asked to buy a head scanning machine from EMI. Ledley did not think the images in EMI's brochure appeared clear, and he offered to create a similar machine for half the price. Georgetown agreed to fund this project for $250,000. Ledley secured the services of a machinist at a local machine shop, an electronic engineer, and a programmer/mathematician to assist in the project.2 The ACTA Scanner debuted in February, 1974 and did not require the use of a water tank.
Following the creation of the ACTA Scanner, Ledley organized Digital Information Science Corporation (DISCO) in order to manufacture the system. DISCO began producing scanners as orders were received. Due to financial constraints, DISCO was forced to request $100,000 upon receipt of the order, $100,000 when the scanner was halfway completed, and the final $100,000 payment upon delivery3. In 1975, Pfizer purchased the rights to manufacture the ACTA Scanner from DISCO for $1.5 million.
Ledley is a Fellow of the American Association for the Advancement of Science and a senior member of the Institute of Electrical and Electronics Engineers. He has earned numerous awards and honors for his work. In 1997, he received the National Medal of Technology from President William Jefferson Clinton for his pioneering work on the whole-body CT diagnostic X-ray scanner. He also founded the Pattern Recognition Society and Computerized Tomography Society.
Sources
1 Ash, J., D. Sittig, and R. Ledley. "The Story Behind the Development of the First Whole-body Computerized Tomography Scanner as Told by Robert S. Ledley." Journal of the American Medical Informatics Association, 2006 Sep-Oct (2006), 465-469, http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1561796. (accessed June 24, 2009).
2 Ibid.
3 Ibid.
Separated Materials:
An ACTA Scanner and numerous accessories were donated to the Division of Medicine and Science in 1984.
Provenance:
This collection was donated by Robert S. Ledley on September 18, 1984.
Restrictions:
The collection is open for research.
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.
overall: 23 5/8 in x 8 1/4 in x 3 7/8 in; 60.0075 cm x 20.955 cm x 9.8425 cm
Object Name:
violin
Place Made:
Italy: Lombardy, Cremona
Date made:
1687
Related Publication:
Luigi Boccherini. Boccherini: String Quintets, op.11, Nos. 4-6
Friedrich Dotzauer. Dotzauer: Quintet in D Minor, Op. 134; Six Pieces for 3 Violoncelli, Op. 104; Three Etudes for Violoncello Solo; Quartet for Violoncello Obbligato, 2 Violins, and Viola, Op. 64
Auguste Franchomme & Frédéric Chopin. Franchomme & Chopin: Grand Duo Concertant; Caprices Op. 7, Nos. 2, 4, & 7; Two Nocturnes; Grande Valse, Op. 34.
Felix Mendelssohn and Neils Gade. Mendelssohn & Gade: String Octet in E-flat Major, Op. 20; String Octet in F Major, Op. 17.
Wolfgang Amadeus Mozart. Wolfgang Amadeus Mozart: The Complete String Quartets
Georges Onslow. Georges Onslow: String Quintets Opp. 38, 39 & 40.
Shinichi Yokoyama. The Decorated Instruments of Antonio Stradivari
Schubert, Franz. Franz Schubert: Quintet in C Major D. 956, Rondo in A Major D. 438
Louis Spohr: Octet in D Minor, Op. 65; Sextet in C Major, Op. 140, Quintet in G Major, Op. 33, No. 2.
