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[D7937ZAY], Letter from Spang Chalfant & Co, Norman Spang to Thomas Alva Edison, May 22nd, 1879

Title: [D7937ZAY], Letter from Spang Chalfant & Co, Norman Spang to Thomas Alva Edison, May 22nd, 1879
Editor's Notes: Pennsylvania man recommends North Carolina muscovite (mica) in telephones; has distinctive metallic ring. Has no material interest in mica and will send samples. Marg: "Ask for cost of 100 sheets of this thickness exact."
Author: Spang Chalfant & Co; Spang, Norman
Recipient: Edison, Thomas Alva
Date: 1879-05-22
Type: Letter
Subject: Metals and minerals; Telephone
Folder ID: D7937-F
Microfilm ID: 52:58
Document ID: D7937ZAY
URL: https://edisondigital.rutgers.edu/document/D7937ZAY
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 52

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