[LB047480], Letter from Alfred Ord Tate to American Engineer, William Hughes (Editor), February 26th, 1891
https://edisondigital.rutgers.edu/document/LB047480
Transcription
Feb 26. 1891. Wm Hughes, Esq., Managing Editor The American Engineer, #230 La Salle St., Chicago, Ills. Dear Sir:- Upon Mr. Edison’s return to the Laboratory a few days ago after an absence of several weeks your letter of 9th instant was handed to him. In reply he has instructed me to say that the resistance of flashed filaments at first diminishes, then increases resistance [of reflashed] filaments increases. A. O. Tate Private Secretary. M[aguire].