[LB057372], Letter from Alfred Ord Tate to Dyer and Seely, May 18th, 1893
https://edisondigital.rutgers.edu/document/LB057372
Transcription
May 18, 1893. Messrs. Dyer & Seely, No. 36 Wall St., New York, Dear Sirs:- Mr. Edison has received your letter of 13th instant, relative to the interference between him and Ball, with regard to the patents on triple separation of ores, and he regrets that it is impossible for him to fix the date in April on which he first put into practice this triple separation. At present John Ott is sick, and is absent from the Laboratory, and Duncan, who worked on the experiment, cannot be found. Yours truly, Private Secretary.