December 12, 1848
To the Senate of the United States:
I transmit herewith, for the consideration and advice of the Senate with regard to its ratification, a treaty concluded on the 6th of August, 1848, by L. E. Powell, on the part of the United States, and the chiefs and headmen of the confederated bands of the Pawnee Indians, together with a report of the Commissioner of Indian Affairs and other papers explanatory of the same.
JAMES K. POLK.
James K. Polk, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/201745