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[NS7704ZBR], Technical Note, Thomas Alva Edison, Charles Batchelor, June 25th, 1877

Title: [NS7704ZBR], Technical Note, Thomas Alva Edison, Charles Batchelor, June 25th, 1877
Editor's Notes: sexty: combining stuff for incr. & decr., "Speaking Telegraph Is a Success you bet!!"
Author: Batchelor, Charles; Edison, Thomas Alva
Date: 1877-06-25
Type: Technical Note
Subject: Multiple telegraphy (duplex, quadruplex)
Folder ID: NS7704-F
Microfilm ID: 7:654
Document ID: NS7704ZBR
URL: https://edisondigital.rutgers.edu/document/NS7704ZBR
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 7