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[D7801G5], Letter from Charles H Avery to Thomas Alva Edison, September 4th, 1878

Title: [D7801G5], Letter from Charles H Avery to Thomas Alva Edison, September 4th, 1878
Editor's Notes: Another inquiry
Author: Avery, Charles H
Recipient: Edison, Thomas Alva
Date: 1878-09-04
Type: Letter
Subject: Microphone and other acoustic devices
Folder ID: D7801-F
Microfilm ID: 15:154
Document ID: D7801G5
URL: https://edisondigital.rutgers.edu/document/D7801G5
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 15