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Transportation Planning and Policy Division (April 10, 2019) [March 1, 2004]. General Highway Map, Columbia County, Arkansas(PDF) (Map) (Revised ed.). 1:62,500. Little Rock: Arkansas Department of Transportation. OCLC910849530. Retrieved August 6, 2023.
ardot.gov
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Planning and Research Division (May 15, 2009) [June 9, 2000]. General Highway Map, Howard County, Arkansas(PDF) (Map) (Revised ed.). 1:62,500. Little Rock: Arkansas State Highway and Transportation Department. OCLC912912927. Retrieved July 30, 2023.
Transportation Planning and Policy Division (December 12, 2011) [August 9, 1999]. General Highway Map, Nevada County, Arkansas(PDF) (Map) (Revised ed.). 1:62,500. Little Rock: Arkansas State Highway and Transportation Department. OCLC915163727. Retrieved August 6, 2023.
Transportation Planning and Policy Division (April 10, 2019) [March 1, 2004]. General Highway Map, Columbia County, Arkansas(PDF) (Map) (Revised ed.). 1:62,500. Little Rock: Arkansas Department of Transportation. OCLC910849530. Retrieved August 6, 2023.