10/00/1918 [Supplied year and month] Edison, Thomas Alva -- Diaries and Journals
(Philosophical Magazine; American Journal of Science and Arts; Hayes, William Alphonsus; Payne, Paul Donald; Hanford, Charles Barnum; Moore, Sherwood Troop (Sam); Meadowcroft, William Henry) Newspapers, books, other publications; Submarines and submarine warfare; Telephone; Electric battery; Chemicals, chemical products, and chemical processes; Microphone and other acoustic devices; Sound and acoustics
[NP115]  Notebook Series -- Pocket Notebooks: PN-18-09-10.2 (1918)
[NP115110; TAEM 244:393]
Courtesy of Thomas Edison National Historical Park.
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