[LB063630], Letter from Thomas Alva Edison to Charles Summer Wirt, July 14th, 1899
https://edisondigital.rutgers.edu/document/LB063630
Transcription
July 14th, 1899. Mr. Charles Wirt, 1028 Filbert St., Philadelphia, Pa. Dear Sir- Replying to yours of the 11th I beg to state I will be glad if you will send me a single 12inch rheostat with capacity of 20 amperes on the first step and 5 on the last step, 8 ohms resistance. Steps to vary as classified in my former letter. Thanking you very much for your courtesy in this matter, I am Yours very truly,