Letter from Zachariah Power Halpin to Thomas Alva Edison, October 1st, 1915

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Author(s)

Halpin, Zachariah Power
Recipient(s)
Edison, Thomas Alva
Others Mentioned
Simpson, John Ewing Melville

Subject(s)

Testing and quality control
Disc phonograph

Dated

1915-10-01 (1915)

Associated Images

Identifier

E1565NJ (legacy)

Rights

Thomas Edison National Historical Park

Publisher

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

Citation

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