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[NA285014], Technical Note, Thomas Alva Edison, July 22nd, 1918

Title: [NA285014], Technical Note, Thomas Alva Edison, July 22nd, 1918
Author: Edison, Thomas Alva
Date: 1918-07-22
Type: Technical Note
Subject: Military; Microphone and other acoustic devices
Folder ID: NA285-F
Microfilm ID: 231:341
Document ID: NA285014
URL: https://edisondigital.rutgers.edu/document/NA285014
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
License: CC0 1.0 Universal
Has Version: Archive.org Viewer, Microfilm Series Reel 231