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[D7802ZMQ], Letter from E Cox Walker to Thomas Alva Edison, May 24th, 1878

Title: [D7802ZMQ], Letter from E Cox Walker to Thomas Alva Edison, May 24th, 1878
Editor's Notes: idea about sound combinations and diaphragms; manufacturing some phonographs for Stereoscopic Co.; can you offer any hints for improving those we have heard in London?
Author: Walker, E Cox
Recipient: Edison, Thomas Alva
Date: 1878-05-24
Type: Letter
Subject: Multiple telegraphy (duplex, quadruplex); Telephone; Cylinder phonograph
Folder ID: [D7802-F] Document File Series -- 1878
Microfilm ID: 15:696
Document ID: D7802ZMQ
URL: https://edisondigital.rutgers.edu/document/D7802ZMQ
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
License: CC0 1.0 Universal
Has Version: Archive.org Viewer, Microfilm Series Reel 15

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