[D7840ZBV], Letter from L A Ludwig to Stockton L Griffin, August 24th, 1878
https://edisondigital.rutgers.edu/document/D7840ZBV
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Title
[D7840ZBV], Letter from L A Ludwig to Stockton L Griffin, August 24th, 1878
Editor's Notes
Wants carbon button -- made microphone by using battery carbon but doesn't transmit voice except as tone and wants to see what will happen with button
Author
Recipient
Date
1878-08-24
Type
Folder/Volume ID
D7840-F
Microfilm ID
19:900
Document ID
D7840ZBV
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University