System Information & Research Division (2017). Annual Average Daily Traffic Estimates(GIS Map) (Map). Arkansas Department of Transportation. Retrieved September 11, 2021.
System Information and Research Division (2015). "Arkansas Road Log Database"(MDB). Arkansas State Highway and Transportation Department. Retrieved March 27, 2016.
Planning and Research Division (May 12, 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 September 11, 2021.
Transportation Planning and Policy Division (May 2016). Map of Nashville, Howard County, Arkansas(PDF) (Map). 1:12,000. Little Rock: Arkansas State Highway and Transportation Department. § E2. Retrieved September 11, 2021.
Planning and Research Division (November 15, 2011). General Highway Map, Pike County, Arkansas(PDF) (Map). 1:62,500. Little Rock: Arkansas State Highway and Transportation Department. OCLC917613374. Retrieved September 19, 2021.
Planning and Research Division (September 11, 2002). General Highway Map, Logan County, Arkansas(PDF) (Map). 1:62,500. Little Rock: Arkansas State Highway and Transportation Department. OCLC914233699. Retrieved October 3, 2021.
Transportation Planning and Policy Division (September 17, 2021). State Highway Route and Section Map, Logan County(PDF) (Map). Cartography by GIS Section. Little Rock: Arkansas Department of Transportation. Retrieved October 3, 2021.
Planning and Research Division (May 12, 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 September 11, 2021.
Planning and Research Division (November 15, 2011). General Highway Map, Pike County, Arkansas(PDF) (Map). 1:62,500. Little Rock: Arkansas State Highway and Transportation Department. OCLC917613374. Retrieved September 19, 2021.
Planning and Research Division (September 11, 2002). General Highway Map, Logan County, Arkansas(PDF) (Map). 1:62,500. Little Rock: Arkansas State Highway and Transportation Department. OCLC914233699. Retrieved October 3, 2021.