System Information and Research Division (2016). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(MDB) on August 29, 2017. Retrieved November 29, 2020.
General Highway Map, Benton County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. August 20, 2012. Retrieved January 30, 2013.
General Highway Map, Newton County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. September 16, 1996. Archived from the original(PDF) on September 29, 2011. Retrieved January 30, 2013.
General Highway Map, Boone County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. December 22, 2011. Retrieved January 30, 2013.
Arkansas State Highway Department (April 1, 1926). State of Arkansas Showing System of State Highways(TIF) (Map). 1:500,000. Little Rock: Arkansas State Highway Commission. Retrieved November 29, 2020 – via Arkansas GIS Office.
Arkansas State Highway Commission (September 1, 1929). State of Arkansas Showing Types of Roads(TIF) (Map). Scale not given. Little Rock: Arkansas State Highway Commission. Retrieved November 29, 2020 – via Arkansas GIS Office.
System Information and Research Division (2016). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(MDB) on August 29, 2017. Retrieved November 29, 2020.
General Highway Map, Newton County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. September 16, 1996. Archived from the original(PDF) on September 29, 2011. Retrieved January 30, 2013.