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[E1664ADV], Letter from Zachariah Power Halpin to Thomas Alva Edison, March 17th, 1916

Title: [E1664ADV], Letter from Zachariah Power Halpin to Thomas Alva Edison, March 17th, 1916
Author: Halpin, Zachariah Power
Recipient: Edison, Thomas Alva
Date: 1916-03-17
Type: Letter
Subject: Testing and quality control; Disc phonograph
Folder ID: E1664A-F
Microfilm ID: 267:313
Document ID: E1664ADV
URL: https://edisondigital.rutgers.edu/document/E1664ADV
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