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[D7801B3D], Letter from R K Baird to Thomas Alva Edison, May 21st, 1878

Title: [D7801B3D], Letter from R K Baird to Thomas Alva Edison, May 21st, 1878
Author: Baird, R K
Recipient: Edison, Thomas Alva
Date: 1878-05-21
Type: Letter
Subject: Microphone and other acoustic devices
Folder ID: D7801-F
Microfilm ID: 15:84
Document ID: D7801B3D
URL: https://edisondigital.rutgers.edu/document/D7801B3D
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 15