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1 finding aid(s) found containing the word(s) Electron tubes.

  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.

    Summary:

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

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