[LB040091], Letter from Thomas Alva Edison to Julius H Block, April 18th, 1890
https://edisondigital.rutgers.edu/document/LB040091
Transcription
April 18, 1890 Mr. J.H. Block, Moscow, Russia. My dear Sir:- I am very much obliged for your letter of 27th ultimo in regard to phonograph matters in Russia, which came to hand in due course of mail and was perused by me with much interact. Yours truly, Thos A. Edison