[NA266-F]

https://edisondigital.rutgers.edu/folder/NA266-F

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Part Of: Notebook Series -- Notebooks by Edison

[NA266-F] N-17-02-22 (1917)

This notebook was used by Edison in February 1917 to record work for the U.S. Navy during World War I. Included are circuit diagrams and drawings relating to the recording, amplification, and measurement of sound. The pages are unnumbered. Only 16 pages have been used.

Courtesy of Thomas Edison National Historical Park.

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