[CA025B], Instructions, Edison Phonograph Works, August 1889
Inspector's Handbook of the Phonograph issued by the Phonograph Works August 1889, First Edition see TAE's draft D9899AAS3
[CA025-F] Primary Printed Series -- Phonograph Companies - Domestic
https://edisondigital.rutgers.edu/document/CA025B
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Archive.org Viewer, Microfilm Series Reel 147