| session | type | convened | adjourned | President pro Tempore of the Senate | Speaker of the House of Representatives |
|---|---|---|---|---|---|
| 1st | long | 4 November 1811 | 6 July 1812 | Crawford, William H. (Rep.- Georgia) | Clay, Henry (Rep.- Kentucky) |
Senate President pro Tempore William H. Crawford served as acting President of the Senate during the "long" session of the 12th Congress due to a vacancy in the Vice Presidency of the United States from 20 April 1812 (Vice President George Clinton having died in office). | |||||
| 2nd | short | 2 November 1812 | 3 March 1813 | Crawford | Clay |
Senate President pro Tempore William H. Crawford served as acting President of the Senate throughout the "short" session of the 12th Congress due to a vacancy in the Vice Presidency of the United States (Vice President George Clinton having died during the previous ["long"] session of that Congress). | |||||
Modified .
. Documentation
- "Regular" Sessions of Congress
- "Regular" Sessions prior to the adoption of the 20th Amendment (1933)
- "Regular" Sessions after the adoption of the 20th Amendment (1933)
- "Extra" Sessions
- "Special SENATE" Sessions
. Related information