[D9247AAA], Letter from Thomas Alva Edison to Albert B Chandler, February 15th, 1892
https://edisondigital.rutgers.edu/document/D9247AAA
Transcription
From the Laboratory of Thomas A. Edison Orange, N. J. Friend Chandler, We now have the phonographs perfect. Can’t we do something on your shorter may circuits it presents congestion in the busy part of the day and presents the well known. Two plugs with but a single thought two keys that bent as one Inquirer Edison