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[D7919ZBF], Letter from R F Cooke to Thomas Alva Edison, July 8th, 1879

Title: [D7919ZBF], Letter from R F Cooke to Thomas Alva Edison, July 8th, 1879
Editor's Notes: Has substance for ELight cheaper and more durable than carbon or platinum. Will show TAE but "keep it quiet." Marg: "Ready anytime to see it."
Author: Cooke, R F
Recipient: Edison, Thomas Alva
Date: 1879-07-08
Type: Letter
Subject: Metals and minerals; Electric light and power
Folder ID: D7919-F
Microfilm ID: 50:83
Document ID: D7919ZBF
URL: https://edisondigital.rutgers.edu/document/D7919ZBF
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 50