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[E1160BC], Letter from Thomas Alva Edison to U.S. Geological Survey, George Otis Smith, April 20th, 1911

Title: [E1160BC], Letter from Thomas Alva Edison to U.S. Geological Survey, George Otis Smith, April 20th, 1911
Editor's Notes: Date from docket, stamp, postmark
Author: Edison, Thomas Alva
Recipient: U.S. Geological Survey; Smith, George Otis
Date: 1911-04-20
Type: Letter
Subject: Testing and quality control; Metals and minerals
Folder ID: E1160-F
Microfilm ID: 250:51
Document ID: E1160BC
URL: https://edisondigital.rutgers.edu/document/E1160BC
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 250
License: CC0 1.0 Universal