1 finding aid(s) found containing the word(s) Radio frequency modulation.

  1. John Hays Hammond papers, 1908-1965

    6,000 items ; 19 containers plus 1 oversize ; 7 linear feet. -- Manuscript Division, Library of Congress, Washington, D.C.


    Inventor and scientist. Correspondence, notebooks, sketches, technical papers, legal briefs, printed matter, chronologies, and annotated photographs relating to Hammond's scientific career and inventions.