[LB047454], Letter from Thomas Alva Edison to Samuel Insull, Edison General Electric Co, February 25th, 1891
https://edisondigital.rutgers.edu/document/LB047454
Transcription
February 25, 1891. Samuel Insull, Esq., 2nd Vice-Pres’t., Edison Gen’l Electric Company, New York City. Dear Sir:- Replying to your letter of 10th instant, in which you ask what progress I have made with the twelve hour carbon for arc light, I beg to say that I have been so busily engaged with motors I was unable to do anything further on the subject mentioned . Yours very truly, Thos A Edison