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Title
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[NP123-F] PN 19-05-17 (1919)
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Description
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This notebook dates from May - September 1919. This pocket notebook contains notes by Thomas A. Edison relating to experiments on storage batteries, a self-starter battery, chemicals, the electromotograph, chalk telephone, Lalande primary batteries, audions, disc records and chemical paper. There are notes about improving the quality of Blue Amberol cylinder records, musician evaluations, selling Portland cement in South America, disc phonograph cabinet production estimates, lists of inventions to be patented and descriptions of property near the Pennsylvania Railroad.
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Identifier
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NP123-F
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Is Part Of
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Notebook Series -- Pocket Notebooks
