1888 [Supplied year] Edison, Thomas Alva to North American Phonograph Co
(New England Phonograph Co; Metropolitan Phonograph Co) Sales and service; Patent assignments, licenses, and royalties; Cylinder phonograph
[D8848]  Document File Series -- 1888: (D-88-48) Phonograph -- Companies
[D8848AFN; TAEM 124:485]
Courtesy of Thomas Edison National Historical Park.