Illinois General Assembly
Illinois' first state constitution in 1818 created the Illinois General Assembly, which was largely based on the United States Congress with a House of Representatives and a Senate. It met in Kaskaskia in 1818 and 1819, in Vandalia from 1820 until 1839, and in Springfield thereafter. Abraham Lincoln was a member of the Illinois House of Representatives from 1834 to 1842.
Ill. Const. of 1818, art. II, § 1; John Clayton, comp., Illinois Fact Book and Historical Almanac 1673-1968 (Carbondale and Edwardsville: Southern Illinois University Press, 1970), 22-23, 204, 205, 207, 209.