[LB048184], Letter from Thomas Alva Edison to Gilbert and Barker Manufacturing Co, March 9th, 1891
https://edisondigital.rutgers.edu/document/LB048184
Transcription
March 9, 1891. Gilbert & Barker Manufacturing Co., #90 John Street, New York City. Dear Sirs: We have had one of your 40 barrel Gasoline Machines in use at the Laboratory for several years; it works perfectly and is one of the most useful appliances we have. Yours truly, (Signed Thos. A. Edison)