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[MBLB4329], Letter from Charles Batchelor to Francis Robbins Upton, August 23rd, 1882

Title: [MBLB4329], Letter from Charles Batchelor to Francis Robbins Upton, August 23rd, 1882
Editor's Notes: Gives results of photometric tests showing 3% variation: "do you have this difficulty?"
Author: Batchelor, Charles
Recipient: Upton, Francis Robbins
Date: 1882-08-23
Type: Letter
Subject: International business operations; Testing and quality control; Incandescent lamp
Folder ID: MBLB4-F
Microfilm ID: 93:699
Document ID: MBLB4329
URL: https://edisondigital.rutgers.edu/document/MBLB4329
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 93