Items
Relation is exactly
Condit and Hanson
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[D7905N], Letter from H W Thomson to Thomas Alva Edison, July 17th, 1879
1879-07-17 -
[MB290], Reminiscence, Charles Batchelor, 1905
1905-00-00 -
[MBN004010], Technical Note, Charles Batchelor, December 18th, 1878
1878-12-18 -
[MBN004060A], Technical Note, Charles Batchelor, August 1st, 1879
1879-08-01 -
[N001025], Technical Note, Charles Batchelor, Thomas Alva Edison, December 15th, 1878
1878-12-15 -
[N052093] Technical Note, October 21st, 1879
1879-10-21