System Information and Research Division (2014). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(MDB) on August 29, 2017. Retrieved March 27, 2016.
Arkansas State Highway and Transportation Department. AHTD Greene County map Retrieved on August 23, 2009.
Arkansas State Highway and Transportation Department. AHTD Clay County map Retrieved on August 23, 2009.
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System Information and Research Division (2014). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(MDB) on August 29, 2017. Retrieved March 27, 2016.