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[X098A058] Letter, 1889-1898

Title: [X098A058] Letter, 1889-1898
Editor's Notes: [this probably dates from a period when TAE was up at Ogden as it is on letterhead of NJPCW Ogden, N.J.] Upton= You should run the 50 volt double and also use th smallest amount of Copper inside the globe as possible-- I found this out by Expmt. [two drawings showing difference]
Author: Edison, Thomas Alva
Recipient: Upton, Francis Robbins
Mentioned: Force, Martin N
Date: 1889-1898
Type: Letter
Subject: Testing and quality control; Incandescent lamp
Folder ID: X098A-F
Document ID: X098A058
URL: https://edisondigital.rutgers.edu/document/X098A058
Rights: NMAH Archives Center
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
License: CC0 1.0 Universal