[NS7802M], Technical Note, Thomas Alva Edison, July 6th, 1878
https://edisondigital.rutgers.edu/document/NS7802M
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Title
[NS7802M], Technical Note, Thomas Alva Edison, July 6th, 1878
Editor's Notes
mechanical microphone
Author
Date
1878-07-06
Type
Folder/Volume ID
NS7802-F
Microfilm ID
7:770
Document ID
NS7802M
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University