[SM039023a], Clipping, Telegraphic Journal, October 13th, 1877
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Title
[SM039023a], Clipping, Telegraphic Journal, October 13th, 1877
Bibliographic Citation
Trimmer, P. "The Double Current Telegraph Key", Telegraphic Journal, October 13th, 1877
Editor's Notes
Description and illustrations of double current key
Author
Date
1877-10-13
Type
Folder/Volume ID
SM039-F
Microfilm ID
25:597
Document ID
SM039023a
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University