(New York), October 15, 1878. 4 pp., on legal size paper. Telephone patent assignment: "I do hereby sell and assign to the...American Speaking Telephone Company...the whole right and title to Letters patent of the Dominion of Canada dated 17th October, 1877, and numbered 8026, for improvements on Speaking Telegraphs to be held and enjoyed by said corporation..." Signed by Edison and cancelled by him with "T.A.E." Docketed on verso.