03/00/1878 [Supplied month] Edison Speaking Phonograph Co and Johnson, Edward Hibberd -- Circulars and Brochures
(Edison, Thomas Alva) Sales and service; Cylinder phonograph
[X154A2]  Historical Society of Pennsylvania, Philadelphia, Pa.: Uriah Hunt Painter Papers -- Unbound Documents (1878)
[X154A2AY; TAEM 0:0]