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- U.S. Geological Survey Geographic Names Information System: Eris, Ohio
- Middleton, Evan P. (1917). History of Champaign County, Ohio: Its People, Industries and Institutions. B.F. Bowen. p. 211.
- "Champaign County". Jim Forte Postal History. Archived from the original on 22 December 2015. Retrieved 21 December 2015.
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