[LB040163], Letter from Thomas Alva Edison to Julius H Block, April 23rd, 1890
https://edisondigital.rutgers.edu/document/LB040163
Transcription
April 23rd, 1890 J.H. Block, Esq., St. Petersburg, Russia My Dear Sir:- I beg to acknowledge with many thanks the receipt of your letter of 19th instant, enclosing extracts from press reports of the week's exhibitions of the Phonograph in Russia. Yours very truly, Thos A. Edison