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[D7906ZAP], Letter from Edwin M Fox to Thomas Alva Edison, June 13th, 1879

Title: [D7906ZAP], Letter from Edwin M Fox to Thomas Alva Edison, June 13th, 1879
Editor's Notes: Wants description of quad for lay readers.
Author: Fox, Edwin M
Recipient: Edison, Thomas Alva
Date: 1879-06-13
Type: Letter
Subject: Telegraph; Multiple telegraphy (duplex, quadruplex); Automatic telegraphy
Folder ID: D7906-F
Microfilm ID: 49:709
Document ID: D7906ZAP
URL: https://edisondigital.rutgers.edu/document/D7906ZAP
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 49