05/28/1901 Hayes, Howard W to Matthews (A.D.) Sons
(New York Phonograph Co; American Graphophone Co) Competition and market structure; Sales and service; Litigation [Attachment/Enclosure]
[CL203]  Company Records Series -- National Phonograph Company -- Correspondence: Domestic (1901)
[CL203AAW; TAEM 215:550]
Courtesy of Thomas Edison National Historical Park.
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