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Ohio Department of Transportation (June 2011). Official Ohio Transportation Map(PDF) (Map). c. 1:570,240. Columbus: Ohio Department of Transportation. §§ F2–F4. OCLC5673562, 31884639. Retrieved January 12, 2013.
Ohio Department of Highways (1948). Ohio Highway Map(PDF) (Map). 1:633,600. Columbus: Ohio Department of Highways. OCLC5673562, 7412169. Retrieved January 18, 2013.
Ohio Department of Highways (1951). Ohio Highway Map(PDF) (Map). 1:633,600. Columbus: Ohio Department of Highways. OCLC5673562, 13655762. Retrieved January 18, 2013.
Ohio Department of Highways (1953). Ohio Highway Map(PDF) (Map). 1:633,600. Columbus: Ohio Department of Highways. OCLC5673562, 7448735. Retrieved January 18, 2013.
Ohio Department of Transportation (July 1997). Official Ohio Transportation Map(PDF) (Map) (1997–1998 ed.). c. 1:696,960. Columbus: Ohio Department of Transportation. OCLC5673562, 31884639. Retrieved January 18, 2013.
Ohio Department of Transportation (June 1999). Official Ohio Transportation Map(PDF) (Map) (1999–2000 ed.). c. 1:696,960. Columbus: Ohio Department of Transportation. OCLC5673562, 31884639. Retrieved January 18, 2013.
Ohio Department of Highways (1945). Ohio Highway Map(PDF) (Map). 1:633,600. Columbus: Ohio Department of Highways. OCLC5673562. Retrieved January 18, 2013.
Ohio Department of Transportation (1973). Ohio Transportation Map(PDF) (Map). 1:554,400. Columbus: Ohio Department of Transportation. OCLC5673562. Retrieved January 18, 2013.
Ohio Department of Transportation (1974). Ohio Transportation Map(PDF) (Map). 1:554,400. Columbus: Ohio Department of Transportation. OCLC5673562. Retrieved January 18, 2013.