January 02, 1849
To the Senators of the United States, respectively:
Sir: Objects interesting to the United States requiring that the Senate should be in session on Monday, the 5th of March next, to receive and act upon such communications as may be made to it on the part of the Executive, your attention in the Senate Chamber, in this city, on that day at 10 o'clock in the forenoon is accordingly requested.
JAMES K. POLK.
James K. Polk, Proclamation—Convening an Extra Session of the United States Senate Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/201785