[QP033AAL237], Legal Testimony, C A L Massie, January 8th, 1908
Cylinder record and duplicating technology
[QP033-F] Legal Series -- Legal Department Records -- Phonograph -- Case Files
https://edisondigital.rutgers.edu/document/QP033AAL237
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Archive.org Viewer, Microfilm Series Reel 225