06/01/1881 Edison, Thomas Alva to Puskas, Theodore -- Telegrams and Cables
(Herz, Cornelius) Patent assignments, licenses, and royalties
[Z400]  Foundation of the Postal and Telecommunication Museum, Budapest, Hungary: Theodore Puskas Papers
[Z400CB; TAEM 0:0]
Courtesy of the Foundation of the Postal and Telecommunication Museum.