U.S. Route 491 (English Wikipedia)

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"State Road Resolutions SR-666.pdf". Utah Department of Transportation. Retrieved April 2, 2012.

ictnews.org

Landry, Alysa (June 21, 2015). "'Devil's Highway': Navajos Grapple With One of Most Dangerous Roads in US". Indian Country Today. Retrieved January 26, 2023.

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Staff. "Trail of the Ancients". New Mexico Tourism Department. Archived from the original on August 21, 2014. Retrieved August 14, 2014.

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"Renaming US 666 Prompts a Run on 'Satanic' Souvenirs". The New York Times. Associated Press. July 20, 2003. p. 20. Archived from the original on March 27, 2008. Retrieved November 17, 2007.

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Wilgoren, Jodi (June 13, 2003). "Journeys; The End of the Road For 'Devil's Highway'". The New York Times. Retrieved April 12, 2007.

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Marten, Susan Taylor (July 20, 2003). "US 666 is gone, but signs went first". St. Petersburg Times. Archived from the original on March 3, 2016. Retrieved May 1, 2019.

state.nm.us

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New Mexico Department of Transportation Mile Post Map (PDF) (Map). New Mexico Department of Transportation. Archived from the original (PDF) on July 23, 2011. Retrieved March 1, 2008.
Staff (September 14, 2009). "American Recovery and Reinvestment Act Tiger Discretionary Grant Application for US 491 Roadway Widening" (PDF). Navajo Nation Department of Transportation; New Mexico Department of Transportation. Archived from the original (PDF) on September 16, 2011. Retrieved June 29, 2011.

dot.state.nm.us

Staff (January 2005). "The Devil's Gone On US 491" (PDF). Qué Pasa. New Mexico Department of Transportation: 1. Archived from the original (PDF) on February 25, 2009. Retrieved May 15, 2008.

us491.com

Staff (2006). "Environmental Assessment US 491 South Corridor phase B MP 15 to MP 46" (PDF). New Mexico Department of Transportation. Archived from the original (PDF) on February 25, 2009. Retrieved June 12, 2008.
Staff. "US 666 Corridor Highway". New Mexico Department of Transportation. Archived from the original on January 7, 2009. Retrieved June 12, 2008.

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Smart, Christopher (July 30, 2003). "Sixes nixed on 'devil's road'". Salt Lake Tribune. p. A1. Retrieved March 27, 2023 – via J. Willard Marriott Library.

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"Highway Reference Online - US-491". maps.udot.utah.gov. Utah Department of Transportation. Retrieved March 1, 2008.

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Staff. "Ute Mountain Casino". Ute Mountain Ute Tribe. Archived from the original on October 25, 2007. Retrieved November 17, 2007.

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Staff (1999). "Ute Mountain Ute telling of the Legend of the Sleeping Ute". Legends and Children's Stories of the Ute Tribe. Ute Mountain Ute Tribe. Retrieved November 26, 2008.

web.archive.org

Staff (2006). "Environmental Assessment US 491 South Corridor phase B MP 15 to MP 46" (PDF). New Mexico Department of Transportation. Archived from the original (PDF) on February 25, 2009. Retrieved June 12, 2008.
Staff (January 2005). "The Devil's Gone On US 491" (PDF). Qué Pasa. New Mexico Department of Transportation: 1. Archived from the original (PDF) on February 25, 2009. Retrieved May 15, 2008.
"Utah Code Annotated". State of Utah. Archived from the original on July 11, 2008. Retrieved May 15, 2008.
New Mexico Department of Transportation Mile Post Map (PDF) (Map). New Mexico Department of Transportation. Archived from the original (PDF) on July 23, 2011. Retrieved March 1, 2008.
Navajo Tourism Department. "Discover Navajo: People of the Fourth World". Navajo Nation Department of Information Technology. Archived from the original on October 30, 2007. Retrieved November 17, 2007.
Staff. "US 666 Corridor Highway". New Mexico Department of Transportation. Archived from the original on January 7, 2009. Retrieved June 12, 2008.
Staff. "Trail of the Ancients". New Mexico Tourism Department. Archived from the original on August 21, 2014. Retrieved August 14, 2014.
Staff. "Ute Mountain Casino". Ute Mountain Ute Tribe. Archived from the original on October 25, 2007. Retrieved November 17, 2007.
Staff. "Dove Creek". Colorado Historical Society. Archived from the original on October 28, 2010. Retrieved May 13, 2008.
von Till Warren, Elizabeth. "Old Spanish Trail History". Old Spanish Trail Association. Archived from the original on March 8, 2008. Retrieved March 19, 2008.
"Renaming US 666 Prompts a Run on 'Satanic' Souvenirs". The New York Times. Associated Press. July 20, 2003. p. 20. Archived from the original on March 27, 2008. Retrieved November 17, 2007.
"Married... with Children: Complete Season 5 DVD". Sony Electronics Inc. Archived from the original on June 16, 2011. Retrieved June 14, 2008.
Marten, Susan Taylor (July 20, 2003). "US 666 is gone, but signs went first". St. Petersburg Times. Archived from the original on March 3, 2016. Retrieved May 1, 2019.
Staff (September 14, 2009). "American Recovery and Reinvestment Act Tiger Discretionary Grant Application for US 491 Roadway Widening" (PDF). Navajo Nation Department of Transportation; New Mexico Department of Transportation. Archived from the original (PDF) on September 16, 2011. Retrieved June 29, 2011.
Staff. "Highways Data". Colorado Department of Transportation. Archived from the original on May 26, 2012. Retrieved March 1, 2008.

wikimedia.org

commons.wikimedia.org

Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.
Executive Committee (May 28, 1938). "Addendum to Minutes of Executive Committee" (PDF) (Report). Washington, DC: American Association of State Highway Officials. p. 53. Retrieved June 15, 2023 – via Wikimedia Commons. U.S. 666 was extended from Gallup, New Mexico via Lupton (Arizona), Sanders, St. Johns, Clifton, Safford, Bowie Junction; thence over State Route 81 to Douglas. (Minutes of Executive Committee, December 4, 1938, Dallas, Texas)

worldcat.org

"Beyond Borders". American Cowboy. Active Interest Media: 44. November 2002. ISSN 1079-3690.
Bureau of Public Roads & American Association of State Highway Officials (November 11, 1926). United States System of Highways Adopted for Uniform Marking by the American Association of State Highway Officials (Map). 1:7,000,000. Washington, DC: United States Geological Survey. OCLC 32889555. Retrieved November 7, 2013 – via Wikimedia Commons.