General Highway Map, Lee County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2008. Archived from the original(PDF) on January 26, 2021. Retrieved December 12, 2011.
General Highway Map, St. Francis County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2007. Archived from the original(PDF) on March 13, 2012. Retrieved December 12, 2011.
Planning and Research Division (2010). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(Database) on June 23, 2011. Retrieved June 9, 2011.
Staff. "Crowley's Ridge Parkway". America's Byways. Federal Highway Administration. Archived from the original on June 8, 2007. Retrieved May 15, 2009.
General Highway Map, Lee County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2008. Archived from the original(PDF) on January 26, 2021. Retrieved December 12, 2011.
General Highway Map, St. Francis County, Arkansas(PDF) (Map). 1:62500. Cartography by Planning and Research Division. Arkansas State Highway and Transportation Department. 2007. Archived from the original(PDF) on March 13, 2012. Retrieved December 12, 2011.
Staff. "Crowley's Ridge Parkway". America's Byways. Federal Highway Administration. Archived from the original on June 8, 2007. Retrieved May 15, 2009.
Planning and Research Division (2010). "Arkansas Road Log Database". Arkansas State Highway and Transportation Department. Archived from the original(Database) on June 23, 2011. Retrieved June 9, 2011.