[NS7813-F]
https://edisondigital.rutgers.edu/folder/NS7813-F
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Items
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[NS7813A], Technical Note, James Adams, Thomas Alva Edison, April 18th, 1877
1877-04-18 -
[NS7813B], Technical Note, Charles Batchelor, January 8th, 1878
1878-01-08 -
[NS7813C], Technical Note, Charles Batchelor, February 27th, 1878
1878-02-27 -
[NS7813D], Technical Note, Charles Batchelor, Thomas Alva Edison, January 8th, 1878
1878-01-08