Dewmaine was an unincorporated African-American coal-mining community in Williamson County, Illinois. Today the area is almost completely non-residential and vacant land, though it now sits at the northern edge of Carterville. Its name is an amalgamation of Admiral Dewey and the USS Maine from the Spanish–American War.
- Callary, Edward (29 September 2008). Place Names of Illinois. University of Illinois Press. p. 93. ISBN 978-0-252-09070-7.
- "Williamson County". Jim Forte Postal History. Retrieved 4 November 2015.
- James N. Adams, comp. 1989. Illinois Place Names. Springfield, Ill.: Illinois State Historical Society. 340.
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