[NS7807L], Technical Note, Charles Batchelor, Thomas Alva Edison, February 22nd, 1878
https://edisondigital.rutgers.edu/document/NS7807L
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Title
[NS7807L], Technical Note, Charles Batchelor, Thomas Alva Edison, February 22nd, 1878
Editor's Notes
speaking attachment for clocks
Date
1878-02-22
Type
Subject
Folder/Volume ID
NS7807-F
Microfilm ID
7:879
Document ID
NS7807L
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University