754. THOMAS A. EDISON A.L.S. "OK Thos A Edison" in pencil, 1p. 5 1/4" x 5", [West Orange, N.J.] Jan. 4, 1921 to Mr. Hancock concerning the discarding of molds for phonographic records. In full: "Mr. Hancock Discard all master females, second masters, working females and working moulds that were made before Nov 1, 1920 or by the 5 step method". Ex. Walter Benjamin, 1951; Collection of Henry A. Luhrs. Light soiling, heavy creases, else very good. $300 - 400