Winding up campaign, candidates speak at court house. Ninian W. Edwards, Whig, bellows denial of charge of Dr. Early, Democrat. Early challenges Edwards to duel. Lincoln speaks next and astonishes audience by ability with which he handles subject in dispute. Sangamo Journal (Springfield, IL), 23 July 1836, 2:1; R. L. Wilson to William H. Herndon, 10 February 1866, William H. Herndon Papers, Henry E. Huntington Library, San Marino, CA.