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[D8807AAF], Letter from Scientific American, George Milton Hopkins to Thomas Alva Edison, February 4th, 1888

Title: [D8807AAF], Letter from Scientific American, George Milton Hopkins to Thomas Alva Edison, February 4th, 1888
Editor's Notes: I have tried to get the date of the phonoplex patents through the telephone but have not received. We want more information as in the construction of the instruments. Will you please give dates of patents or send description of the mechanical construction and oblige.
Author: Scientific American; Hopkins, George Milton
Recipient: Edison, Thomas Alva
Date: 1888-02-04
Type: Letter
Subject: Newspapers, books, other publications; Patents; Phonoplex and railroad telegraphy
Folder ID: D8807-F
Microfilm ID: 121:687
Document ID: D8807AAF
URL: https://edisondigital.rutgers.edu/document/D8807AAF
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 121

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