10/14/1875 Batchelor, Charles, Adams, James and Edison, Thomas Alva -- Technical Notes and Drawings
Electric pen and mimeograph
[NE1691]  Notebook Series -- Experimental Researches: Cat. 994 Vol. 1 (1875-1876, 1877-1878)
[NE1691005; TAEM 3:196]
Courtesy of Thomas Edison National Historical Park.