Planning and Research Division (March 28, 2012). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(MBD) on June 23, 2011. Retrieved April 13, 2012.
General Highway Map, Washington County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. February 6, 2012. Retrieved May 2, 2012.
General Highway Map, Benton County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. December 13, 2011. Retrieved May 2, 2012.
Planning and Research Division (March 28, 2012). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(MBD) on June 23, 2011. Retrieved April 13, 2012.