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[NB262011A], Technical Note, Zachariah Power Halpin, August 21st, 1914

Title: [NB262011A], Technical Note, Zachariah Power Halpin, August 21st, 1914
Author: Halpin, Zachariah Power
Date: 1914-08-21
Type: Technical Note
Subject: Miner's safety lamp
Folder ID: NB262-F
Microfilm ID: 241:853
Document ID: NB262011A
URL: https://edisondigital.rutgers.edu/document/NB262011A
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 241