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[X111AT], Letter from Exchange Telegraph Co Ltd to Marshall Lefferts, January 31st, 1874

Title: [X111AT], Letter from Exchange Telegraph Co Ltd to Marshall Lefferts, January 31st, 1874
Author: Exchange Telegraph Co Ltd
Recipient: Lefferts, Marshall
Mentioned: Phelps, George May; Edison, Thomas Alva
Date: 1874-01-31
Type: Letter
Subject: Testing and quality control; Automatic telegraphy
Folder ID: X111-F
Document ID: X111AT
URL: https://edisondigital.rutgers.edu/document/X111AT
Rights: The New-York Historical Society
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University