Planning and Research Division (2010). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(Database) on 23 June 2011. Retrieved June 9, 2011.
General Highway Map(PDF) (Map) (Columbia County ed.). Arkansas State Highway and Transportation Department. Retrieved 2011-09-23.
Route and Section Map(PDF) (Map) (Columbia County ed.). Arkansas State Highway and Transportation Department. Retrieved 2011-09-23.
Planning and Research Division (2010). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(Database) on 23 June 2011. Retrieved June 9, 2011.