Letter from Lee de Forest to Arnold O. Beckman
- 1931-Nov-09
In this letter, de Forest proposes a process that could replace halftone film.
Lee de Forest (1873–1961) was an inventor, most notably of Audion vacuum tubes in the early twentieth century. His serial business ventures included work in radio, telegraphy, telephony, broadcasting, and film.
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Forest, Lee De. “Letter from Lee De Forest to Arnold O. Beckman,” November 9, 1931. Beckman Historical Collection, Box 1, Folder 17. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/pc289j93m.
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