Long, David (2001). "Townships"(PDF). StoryLines Midwest. American Library Association. Discussion Guide No. 1. Archived from the original(PDF) on November 20, 2012.
census.gov
census.gov
U.S. Census Bureau (2002). "Government Organization"(PDF). 2002 Census of Governments. 1 (1). Washington, DC: U.S. Government Printing Office: 8. GC02(1)-1.
Long, David (2001). "Townships"(PDF). StoryLines Midwest. American Library Association. Discussion Guide No. 1. Archived from the original(PDF) on November 20, 2012.