March 03, 1851
To the Senators of the United States, respectively.
SIR: Whereas divers and weighty causes connected with executive business necessary to be transacted create an extraordinary occasion requiring that the Senate be convened, you are therefore requested, as a member of that body, to attend a meeting thereof to be holden at the Capitol, in the city of Washington, on the 4th day of March instant.
MILLARD FILLMORE.
Millard Fillmore, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/201101