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- mm78024703 abstract "Correspondence, notebooks, technical papers, legal briefs, chronologies, printed matter, sketches, annotated photographs, and other papers relating to Hammond's scientific career and inventions. Subjects include Hammond's basic experiments in radio control, frequency modulation, intermediate frequency, triode electron tube, and the Elmer Ambrose Sperry dispute on inertial guidance patents. Correspondents include Ernst Fredrik Werner Alexanderson, Alexander Graham Bell, Lee De Forest, Irving Langmuir, and Nikola Tesla.".
- mm78024703 accessRights "Open to research.".
- mm78024703 accrualMethod "Gift,".
- mm78024703 contributor B12948648.
- mm78024703 date "||||".
- mm78024703 description "Correspondence, notebooks, technical papers, legal briefs, chronologies, printed matter, sketches, annotated photographs, and other papers relating to Hammond's scientific career and inventions. Subjects include Hammond's basic experiments in radio control, frequency modulation, intermediate frequency, triode electron tube, and the Elmer Ambrose Sperry dispute on inertial guidance patents. Correspondents include Ernst Fredrik Werner Alexanderson, Alexander Graham Bell, Lee De Forest, Irving Langmuir, and Nikola Tesla.".
- mm78024703 description "Finding aid available in the Library of Congress Manuscript Reading Room and at http://hdl.loc.gov/loc.mss/eadmss.ms010036.".
- mm78024703 description "Gift, Hammond estate, 1966.".
- mm78024703 description "Inventor and scientist.".
- mm78024703 extent "19 1".
- mm78024703 extent "6,000".
- mm78024703 extent "7".
- mm78024703 identifier eadmss.ms010036.
- mm78024703 identifier eadmss.ms010036.3.
- mm78024703 issued "||||".
- mm78024703 language "Collection material in English.".
- mm78024703 language "eng".
- mm78024703 rights "Open to research.".
- mm78024703 subject "Alexanderson, Ernst Fredrik Werner, 1878-1975 Correspondence.".
- mm78024703 subject "Bell, Alexander Graham, 1847-1922 Correspondence.".
- mm78024703 subject "De Forest, Lee, 1873-1961 Correspondence.".
- mm78024703 subject "Electron tubes.".
- mm78024703 subject "Inertial navigation systems Patents.".
- mm78024703 subject "Langmuir, Irving, 1881-1957 Correspondence.".
- mm78024703 subject "Radio Research.".
- mm78024703 subject "Radio frequency modulation.".
- mm78024703 subject "Sperry, Elmer Ambrose, 1860-1930.".
- mm78024703 subject "Tesla, Nikola, 1856-1943 Correspondence.".
- mm78024703 title "John Hays Hammond papers, 1908-1965 (bulk 1912-1953).".
- mm78024703 type "collection".