10/13/1902 Whitham, Jay Manuel to Edison Portland Cement Co
(Vulcanite Portland Cement Co; Bain, D Frank; Dunn (Vulcanite Portland Cement Co employee)) Competition and market structure; Sales and service; Engines, boilers, prime movers
[CJ606]  Company Records Series -- Edison Portland Cement Company -- Corporate Files: General (1902)
[CJ606ACG; TAEM 202:599]
Courtesy of Thomas Edison National Historical Park.
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