10/08/1878 Edison, Thomas Alva to Puskas, Theodore
(Gold and Stock Telegraph Co; Gouraud, George Edward; Ladd, George S) Telephone
[Z400]  Foundation of the Postal and Telecommunication Museum, Budapest, Hungary: Theodore Puskas Papers
[Z400AX; TAEM 0:0]
Courtesy of the Foundation of the Postal and Telecommunication Museum.