Hammond, John Hays, 1888-1965.
John Hays Hammond papers, 1908-1965 (bulk 1912-1953).
Correspondence, notebooks, sketches, technical papers, legal briefs, printed matter, chronologies, and annotated photos, chiefly 1912-53. Subjects include Hammond's basic experiments in radio control, intermediate frequency, frequency modulation, the triode electron tube, and the Elmer A. Sperry dispute on inertial guidance patents. Correspondents include Ernst F. W. Alexanderson, Alexander Graham Bell, Lee De Forest, Irving Langmuir, and Nikola Tesla.
John Hays Hammond, Jr. Inventor and scientist.
Sperry, Elmer Ambrose, 1860-1930.
Alexanderson, Ernst Fredrik Werner, 1878-1975.
Bell, Alexander Graham, 1847-1922.
De Forest, Lee, 1873-1961.
Langmuir, Irving, 1881-1957.
Tesla, Nikola, 1856-1943.
Electron tubes.
Inertial navigation systems -- Patents.
Radio -- Research.
Radio frequency modulation.
Drawings. aat
Legal documents. aat
Notebooks. aat
Photographs. aat
Inventors. lcsh
Scientists lcsh
AIP-ICOS
Library of Congress. Manuscript Division. James Madison Memorial Building, First Street and Independence Avenue SE, Washington, DC 20540, USA