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[E1802AY], Letter from Thomas Alva Edison to U.S. Geological Survey, George Otis Smith, December 20th, 1918

Title: [E1802AY], Letter from Thomas Alva Edison to U.S. Geological Survey, George Otis Smith, December 20th, 1918
Author: Edison, Thomas Alva
Recipient: U.S. Geological Survey; Smith, George Otis
Mentioned: U.S. Navy
Date: 1918-12-20
Type: Letter
Subject: Military; Sound and acoustics
Folder ID: E1802-F
Microfilm ID: 269:741
Document ID: E1802AY
URL: https://edisondigital.rutgers.edu/document/E1802AY
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 269