U.S. Route 412 (English Wikipedia)

General Highway Map (PDF) (Map) (Benton County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Washington County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
"[Arkansas] State Highways 2009 (Database)." April 2010. AHTD: Planning and Research Division. Database. Archived 2011-07-07 at the Wayback Machine Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Madison County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Carroll County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Boone County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Marion County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Baxter County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Fulton County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Sharp County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Lawrence County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.
General Highway Map (PDF) (Map) (Greene County ed.). Arkansas State Highway and Transportation Department. Retrieved June 4, 2011.

arkansasonline.com

Wood, Ron (13 October 2023). "Public input sessions set for U.S. 412 interstate plans, including one meeting in Siloam Springs". Arkansas Online. Retrieved 19 October 2023.

bridgehunter.com

"Cache River US 412 Bridge." Bridgehunter.com. Updated April 19, 2010. Bridge Profile. Retrieved 2011-06-04.

grmims.com

grmservices.grmims.com

Special Committee on U.S. Route Numbering (2024). "2024 Spring Meeting Report to the Council on Highways and Streets" (Report). Washington, DC: American Association of State Highway and Transportation Officials. Retrieved 2024-06-02 – via AASHTO Route Numbering Archive.

talkbusiness.net

Della Rosa, Jeff (May 21, 2021). "U.S. legislators look to designate part of Highway 412 as 'future interstate'". Talk Business & Politics. Retrieved May 22, 2021.

transportation.org

"Final_Report_USRN_Fall_2023_R_1.pdf" (PDF). Retrieved July 4, 2024.

usends.com

mapguy, End of U.S. Highway 412 (with maps of U.S. 412 and related routes). URL accessed 19:45, 25 March 2006 (UTC).

web.archive.org

mapguy, US route numbering curiosities and violations (with maps of U.S. 412 and related routes). URL accessed 20:10, 25 March 2006 (UTC).
"[Arkansas] State Highways 2009 (Database)." April 2010. AHTD: Planning and Research Division. Database. Archived 2011-07-07 at the Wayback Machine Retrieved June 4, 2011.