07/18/1878 Redpath, James to Jones, Frederick W
(Partrick and Carter) Production difficulties and adjustments; Cylinder phonograph
[X154B5]  Historical Society of Pennsylvania, Philadelphia, Pa.: Uriah Hunt Painter Papers -- Edison Speaking Phonograph Company Letterbooks -- Phonograph Agency Letterbook (July-August 1878)
[X154B5AI; TAEM 0:0]