No place: February 13, 1885. 2 pp. on legal size paper. Agreement between Western Union Telegraph Company and Edison, by which he assigns for "one dollar", "the exclusive right, title, and interest" in his inventions of "a series of armature coils electrically connected together, a series of insulated commutator strips...and a series of commutator brushes..." Boldly signed by Edison, his patent solicitor Richard N. Dyer, and Attorney Wm. F. Brucostis. Together with another 2 pp. unsigned document relating to aspects of the signed one. Docketed on verso. Small closed tears and creasing along edges, lightly toned.