^Arkansas State Highway and Transportation Department (2015). "Arkansas Road Log Database". Little Rock: Arkansas State Highway and Transportation Department. Archived from the original(MDB) on August 29, 2017. Retrieved March 27, 2016.
^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 December 30, 2017 – via Arkansas GIS Office.