John Hays Hammond papers
Language: eng
Number of pages: 6000
Subjects: Correspondence; Inertial navigation systems; Radio; Electron tubes; Radio frequency modulation; Patents; Research
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.
Notes: Open to research.

Gift, Hammond estate, 1966.

Inventor and scientist.

Collection material in English.

Finding aid available in the Library of Congress Manuscript Division and at http://hdl.loc.gov/loc.mss/eadmss.ms010036