On Friday, November 4th, 1842
Lincoln marries Mary Todd, the daughter of Robert S. Todd, of Lexington, Kentucky. Episcopal minister Reverend Charles Dresser presides over the ceremony, which takes place in the home of Ninian W. Edwards and Elizabeth Edwards, Mary Todd's sister. Sangamo Journal (Springfield, IL), 11 November 1842, 2:6; Albert J. Beveridge, Abraham Lincoln, 1809-1858 (Boston: Houghton Mifflin, 1928), 1:354-355.

Related sources from The Collected Works of Abraham Lincoln

Family Record in Abraham Lincoln's Bible

Lincoln Timemap for 1842