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[MU004], Letter from Wm Hellesen to Thomas Alva Edison, December 20th, 1878

Title: [MU004], Letter from Wm Hellesen to Thomas Alva Edison, December 20th, 1878
Editor's Notes: sends drawing of apparatus for checking current passing through each electric light; Upton to answer
Author: Hellesen, Wm
Recipient: Edison, Thomas Alva
Date: 1878-12-20
Type: Letter
Subject: Incandescent lamp; Dynamos and generators
Folder ID: MU01-F
Microfilm ID: 95:504
Document ID: MU004
URL: https://edisondigital.rutgers.edu/document/MU004
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 95