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[D8020ZDT], Letter from A W Johnson to Thomas Alva Edison, April 12th, 1880

Title: [D8020ZDT], Letter from A W Johnson to Thomas Alva Edison, April 12th, 1880
Editor's Notes: Calls TAE attention to improved dynamometer devised by a friend. Has dial indicator like steam gauge.
Author: Johnson, A W
Recipient: Edison, Thomas Alva
Date: 1880-04-12
Type: Letter
Subject: Dynamos and generators
Folder ID: D8020-F
Microfilm ID: 53:728
Document ID: D8020ZDT
URL: https://edisondigital.rutgers.edu/document/D8020ZDT
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 53