List of United States Congresses
This is a list of the several United States Congresses, since their beginning in 1789, including their beginnings, endings, and the dates of their individual sessions. Each elected bicameral Congress (of the two chambers of the Senate and the House of Representatives) lasts for two years and begins on January 3 of odd-numbered years.
Source: Wikipedia — List of United States Congresses (CC BY-SA 4.0)