December 14, 1866
To the Senate and House of Representatives:
I communicate a translation of a letter of the 17th of August last addressed to me by His Majesty Alexander, Emperor of Russia, in reply to the joint resolution of Congress approved on the 16th day of May, 1866, relating to the attempted assassination of the Emperor, a certified copy of which was, in compliance with the request of Congress, forwarded to His Majesty by the hands of Gustavus V. Fox, late Assistant Secretary of the Navy of the United States.
ANDREW JOHNSON.
Andrew Johnson, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202623