Thomas A. Edison Papers Image Edition · Thomas Edison Papers Digital Edition

[NB239159A], Technical Note, William Alphonsus Hayes, July 1920

Title: [NB239159A], Technical Note, William Alphonsus Hayes, July 1920
Author: Hayes, William Alphonsus
Mentioned: Edison, Thomas Alva; Hanley, John A
Date: 1920-07-00
Type: Technical Note
Subject: Dictating machines; Phonograph recordings; Sound and acoustics
Folder ID: NB239-F
Microfilm ID: 240:231
Document ID: NB239159A
URL: https://edisondigital.rutgers.edu/document/NB239159A
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 240
License: CC0 1.0 Universal