Hon. H. HAMLIN
President United States Senate.
SIR: In reply to the resolution of the Senate dated February 14, 1865, I transmit herewith a communication from the Secretary of War, forwarding a copy of the report of the court of inquiry "in respect to the explosion of the mine in front of Petersburg."
I am, sir, very respectfully, your obedient servant,
Abraham Lincoln, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/202777