Wilson, Douglas L., ed; Davis, Rodney O., ed. 'Register of Informants' in 'Herndon's Informants: Letters, Interviews, and Statements About Abraham Lincoln' . Urbana: University of Illinois Press, 1998. [format: book], [genre: history]. Permission: University of Illinois Press
Persistent link to this document: http://lincoln.lib.niu.edu/file.php?file=herndon737.html

Campbell moved to LaSalle, Illinois, in 1850 to become involved in coal mining and in Whig and Republican politics. During the campaigns of 1856 and 1858, he loaned AL money for incidental campaign expenses. In 1858 he was elected to the Illinois House. (Biographical Directory of the American Congress; Irwin Unger, The Greenback Era [Princeton, N.J., 1964])