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[D7941ZHI], Letter from Thomas Alva Edison to Edward Hibberd Johnson, November 1st, 1879

Title: [D7941ZHI], Letter from Thomas Alva Edison to Edward Hibberd Johnson, November 1st, 1879
Editor's Notes: "Discovered method work call with transmitter battery. Trivial change. Bergmann's work splendid. Hundred testable Tuesday. With our way working chalks perfectly constant."
Author: Edison, Thomas Alva
Recipient: Johnson, Edward Hibberd
Mentioned: Bergmann, Sigmund
Date: 1879-11-01
Type: Letter
Subject: Metals and minerals; Telephone
Folder ID: D7941-F
Microfilm ID: 52:883
Document ID: D7941ZHI
URL: https://edisondigital.rutgers.edu/document/D7941ZHI
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 52
License: CC0 1.0 Universal

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