03/12/1878 Edison, Thomas Alva to Painter, Uriah Hunt
(Johnson, Edward Hibberd) Management (companies and organizations); Patents; Microphone and other acoustic devices; Cylinder phonograph
[X154A2]  Historical Society of Pennsylvania, Philadelphia, Pa.: Uriah Hunt Painter Papers -- Unbound Documents (1878)
[X154A2AV; TAEM 0:0]