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[NE1691052], Technical Note, Charles Batchelor, December 9th, 1875

Title: [NE1691052], Technical Note, Charles Batchelor, December 9th, 1875
Author: Batchelor, Charles
Mentioned: Western Union; Helmholtz, Hermann von
Date: 1875-12-09
Type: Technical Note
Subject: Acoustic telegraphy
Folder ID: NE1691-F
Microfilm ID: 3:218
Document ID: NE1691052
URL: https://edisondigital.rutgers.edu/document/NE1691052
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 3