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[D7801F1], Letter from Leopold Wagenknecht to Thomas Alva Edison, August 14th, 1878

Title: [D7801F1], Letter from Leopold Wagenknecht to Thomas Alva Edison, August 14th, 1878
Editor's Notes: Another inquiry
Author: Wagenknecht, Leopold
Recipient: Edison, Thomas Alva
Date: 1878-08-14
Type: Letter
Subject: Microphone and other acoustic devices
Folder ID: D7801-F
Microfilm ID: 15:147
Document ID: D7801F1
URL: https://edisondigital.rutgers.edu/document/D7801F1
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
License: CC0 1.0 Universal