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[E1664AAY], Letter from John Pierrepont Constable to Thomas Alva Edison, January 19th, 1916

Title: [E1664AAY], Letter from John Pierrepont Constable to Thomas Alva Edison, January 19th, 1916
Author: Constable, John Pierrepont
Recipient: Edison, Thomas Alva
Mentioned: Hayes, Clarence Bowser; Halpin, Zachariah Power
Date: 1916-01-19
Type: Letter
Subject: Testing and quality control; Cylinder phonograph; Disc phonograph
Folder ID: E1664A-F
Microfilm ID: 267:189
Document ID: E1664AAY
URL: https://edisondigital.rutgers.edu/document/E1664AAY
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Has Version: Archive.org Viewer, Microfilm Series Reel 267