[LB039330], Letter from Alfred Ord Tate to Edison Lamp Co, Francis Robbins Upton, April 4th, 1890
https://edisondigital.rutgers.edu/document/LB039330
Transcription
April 4, 90 Francis E. Upton, Esq., Gen'l Manager, Edison Lamp Company, Harrison, N.J. Dear Sir:- Mr. Edison has read your letter of 31st ultimo, in regard to the desirability of patenting the combination lamp plug, and I have today written Messrs. Dyer & Seely, on behalf of Mr. Edison, instructing them to obtain a patent if possible upon this device. Yours truly, A.O. Tate Private Secretary