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- U.S. Geological Survey Geographic Names Information System: Tampico, Ohio
- The History of Darke County, Ohio: Containing a History of the County; Its Cities, Towns, Etc. W. H. Beers & Company. 1880. p. 294.
- "Darke County". Jim Forte Postal History. Retrieved 25 December 2015.
- Wilson, Frazer Ells (1914). History of Darke County, Ohio, from its earliest settlement to the present time. Milford, Ohio: Hobart Publishing Company. p. 555.
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