1876 Edison's Electric Pen and Duplicating Press Co and Batchelor, Charles -- Circulars and Brochures
Electric pen and mimeograph
[D7607]  Document File Series -- 1876: (D-76-07) Electric Pen -- Edison's Electrical Pen & Duplicating Press Co
[D7607E; TAEM 13:953]
Courtesy of Thomas Edison National Historical Park.