[LB039266], Letter from Thomas Alva Edison to United Edison Manufacturing Co, Samuel Dana Greene, Jr., April 2nd, 1890
https://edisondigital.rutgers.edu/document/LB039266
Transcription
April 2nd 1890 S.D. Greene, Esq., Asst. to Gen. Manager, United Edison Manufacturing Company No. 65 Fifth Avenue, New York City Dear Sir:- I beg to acknowledge the receipt of your letter of 31st ult., in regard to lighting arrestor. The best lightning arrestor that I know of is one which is described in some of my patents. It consists of putting a condenser on each side of the dynamo to [illegible]. We use a great many Condensers in connection with my system of Phonoplex Telegraphy, and we find that they are excellent lightning arrestors. In fact, I know of nothing which affords such ample protection. Yours very truly, Thos A. Edison