| session | type | convened | adjourned | President pro Tempore of the Senate |
Speaker of the House of Representatives |
|
| Special | SENATE | 4 March 1845 | 20 March 1845 | none | - - - - | |
| ||||||
| 1st | long | 1 December 1845 | 10 August 1846 | Sevier, Ambrose H. (Dem.- Arkansas) | Davis, John W. (Dem.- Indiana) | |
| 2nd | short | 7 December 1846 | 3 March 1847 | Atchison, David Rice (Dem.- Missouri) | Davis | |
|