753. THOMAS A. EDISON Boldly-written A.L.S. in pencil "Edison", 1p. 4to., [n.p., n.d.], to Jaffrey Buchanan, manager of the Record Division. In full: "Buchanan, see report = its [sic] not good enough yet. Add if possible 1 to 1 1/2 feet to the length of the Duct inside the room supplying air to room & possible [sic] a bend. Edison. Let me know when done & I will have new desk made". On verso there is a small sketch of a triangular object and a calculation, also in Edison's hand. A few chips to margin, evenly toned, very good. $350 - 450