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[D7838ZEW], Letter from Gold and Stock Telegraph Co, George S Ladd to Thomas Alva Edison, September 28th, 1878

Title: [D7838ZEW], Letter from Gold and Stock Telegraph Co, George S Ladd to Thomas Alva Edison, September 28th, 1878
Editor's Notes: of 100 carbon buttons sent about 40% ok for use, one half of those being slightly damaged, have found no difficulty in making them here [SF] by pressing powdered carbon into place in phones rather than making first in a mold, Walker writes that Phelps and Bentley find buttons made out of gas coke work well as the composition and are indestructible
Author: Gold and Stock Telegraph Co; Ladd, George S
Recipient: Edison, Thomas Alva
Date: 1878-09-28
Type: Letter
Subject: Shipping and materials handling; Carbon, coal, glass, ceramics
Folder ID: D7838-F
Microfilm ID: 19:772
Document ID: D7838ZEW
URL: https://edisondigital.rutgers.edu/document/D7838ZEW
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 19

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