| session | type | convened | adjourned | President pro Tempore of the Senate |
Speaker of the House of Representatives |
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| 1st | long | 3 December 1855 | 18 August 1856 | Bright | Banks, Nathaniel P. (Amer.- Massachusetts) | |
| 2nd | Extra | 21 August 1856 | 30 August 1856 | Bright | Banks | |
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| 3rd | short | 1 December 1856 | 3 March 1857 | Mason, James M. (Dem.- Virginia) | Banks | |
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