Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Concordia Parish (North Section)(PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved May 14, 2016.
Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Tensas Parish(PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved May 14, 2016.
Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). District 58: Official Control Section Map, Construction and Maintenance(PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved May 14, 2016.
Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). Madison Parish (East Section)(PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved May 14, 2016.
Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). District 05: Official Control Section Map, Construction and Maintenance(PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved May 14, 2016.
Louisiana Department of Transportation and Development, Office of Multimodal Planning (February 2012). East Carroll Parish(PDF) (Map). Scale not given. Baton Rouge: Louisiana Department of Transportation and Development. Retrieved May 14, 2016.
gis.dotd.la.gov
"La DOTD GIS". Louisiana Department of Transportation and Development. 2013. Archived from the original on October 16, 2013. Retrieved July 25, 2013.
Special Committee on U.S. Route Numbering (May 6, 2005). "Report of the Special Committee on U.S. Route Numbering"(PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 2–3. Archived from the original(PDF) on October 16, 2017. Retrieved May 25, 2016.
web.archive.org
"La DOTD GIS". Louisiana Department of Transportation and Development. 2013. Archived from the original on October 16, 2013. Retrieved July 25, 2013.
Special Committee on U.S. Route Numbering (May 6, 2005). "Report of the Special Committee on U.S. Route Numbering"(PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 2–3. Archived from the original(PDF) on October 16, 2017. Retrieved May 25, 2016.