09/06/1875 Edison, Thomas Alva to Ott, John F
(Batchelor, Charles) Purchases; Tools and machinery; Electric pen and mimeograph
[LB001]  Letterbook Series -- General Letterbooks: LB-001 (1875, 1877-1878)
[LB001018; TAEM 28:20]
Courtesy of Thomas Edison National Historical Park.