[LB052361], Letter from Alfred Ord Tate to William F Lyons, September 23rd, 1891
https://edisondigital.rutgers.edu/document/LB052361
Transcription
B. Sept. 23rd, 1891. Mr. William F. Lyons, Ashland, Schuylkill Co., Pennsylvania. Dear Sir:- In reply to your letter of 15th instant addressed to Mr. Edison, in which you ask what kind of wire is used in the Edison Incandescent Lamps above the filament, I beg to inform you that plain copper wire is used on both sides. Yours very truly, AO Tate Private Secretary.