1876 Edison's Electric Pen and Duplicating Press Co and Bliss, George Harrison -- Instructions and Directions
(Gilliland, Ezra Torrance; Edison, Thomas Alva) Sales and service; Electric pen and mimeograph
[D7607]  Document File Series -- 1876: (D-76-07) Electric Pen -- Edison's Electrical Pen & Duplicating Press Co
[D7607K; TAEM 162:1003]
Courtesy of Thomas Edison National Historical Park.