[NS7807K], Technical Note, Charles Batchelor, February 20th, 1878
https://edisondigital.rutgers.edu/document/NS7807K
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Title
[NS7807K], Technical Note, Charles Batchelor, February 20th, 1878
Editor's Notes
talking clock?
Author
Date
1878-02-20
Type
Subject
Folder/Volume ID
NS7807-F
Microfilm ID
7:879
Document ID
NS7807K
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University