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[D7801A3], Letter from John W S Arnold to Thomas Alva Edison, March 7th, 1878

Title: [D7801A3], Letter from John W S Arnold to Thomas Alva Edison, March 7th, 1878
Editor's Notes: Prof. of NYU medical dept wants larger machine constructed (appears to be some sort of acoustic apparatus)
Author: Arnold, John W S
Recipient: Edison, Thomas Alva
Date: 1878-03-07
Type: Letter
Subject: Microphone and other acoustic devices
Folder ID: D7801-F
Microfilm ID: 15:8
Document ID: D7801A3
URL: https://edisondigital.rutgers.edu/document/D7801A3
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