May 01, 1860
To the Senate:
In compliance with the resolution of the Senate adopted March 1860, calling for the correspondence, etc., in relation to the Mountain Meadow and other massacres in Utah Territory, I have the honor to transmit the report, with the accompanying documents, of the Secretary of the Interior, who was instructed to collect the information.
JAMES BUCHANAN.
James Buchanan, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/201965