Memorandum, Hugh De Coursey Hamilton, March 20th, 1886

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Author(s)

Hamilton, Hugh De Coursey
Recipient(s)
Others Mentioned
Railway Telegraph and Telephone Co
Bunnell (J.H.) & Co
Western Electric Co
Bergmann & Co

Subject(s)

Phonoplex and railroad telegraphy
Research and development

Dated

1886-03-20 (1886)

Associated Images

2

Identifier

D8636D (legacy)

Rights

Thomas Edison National Historical Park

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
 

Citation

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