[D8102B], Letter from Joseph Medill to Thomas Alva Edison, March 6th, 1881
https://edisondigital.rutgers.edu/document/D8102B
→ View document with UniversalViewer
→ View document on Archive.org
→ Re-use this digital object via a IIIF manifest
Title
[D8102B], Letter from Joseph Medill to Thomas Alva Edison, March 6th, 1881
Editor's Notes
Whenever you resume investigation of audiphone, you'll find the best points in North's ear trumpet; suggest you get one [circular enclosed; follows]. After that you should invent better, cheaper insulated wire for underground use.
Author
Recipient
Date
1881-03-06
Type
Folder/Volume ID
D8102-F
Microfilm ID
57:21
Document ID
D8102B
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University