Rand McNally and Company (1927). "Kansas" (Map). Rand McNally Auto Road Atlas of the United States and Ontario, Quebece, and the Maritime Provinces of Canada, with a Brief Description of the National Parks and Monuments. 1:1,600,000. Chicago: Rand McNally and Company. pp. 54–55. OCLC2078375 – via Rumsey Collection.
Rand McNally and Company (1924). "Kansas" (Map). AutoTrails Map, Southern Nebraska, Eastern Colorado, Kansas, Northeastern New Mexico, Northern Oklahoma. 1:1,600,000. Chicago: Rand McNally and Company. OCLC2078375. Retrieved November 19, 2020 – via David Rumsey Map Collection.
Natzke, Stefan; Neathery, Mike; Adderly, Kevin (September 26, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Archived from the original on July 4, 2012. Retrieved April 25, 2020.
Kansas Department of Transportation (2019–2020). 2019–2020 Kansas State Map(PDF) (Map). Scale not given. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 20, 2020.
Bureau of Transportation Planning (2018). Traffic Flow Map Kansas State Highway System(PDF) (Map). [c. 1:1,584,000]. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 4, 2020. Retrieved April 25, 2020.
Bureau of Transportation Planning (2018). Traffic Flow Inset Map Kansas State Highway System(PDF) (Map). [c. 1:1,584,000]. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 4, 2020. Retrieved April 25, 2020.
Bureau of Transportation Planning (June 2009). Morton County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (December 2010). Stanton County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (January 2011). Hamilton County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (December 2010). Greeley County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (July 2010). Wallace County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (November 2011). Sherman County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (August 2008). Cheyenne County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
State Highway Commission of Kansas (1937). Kansas State Highway System(PDF) (Map). Scale not given. Topeka: State Highway Commission of Kansas. Archived(PDF) from the original on May 4, 2020. Retrieved April 24, 2020.
State Highway Commission of Kansas (1938). Kansas State Highway System(PDF) (Map). Scale not given. Topeka: State Highway Commission of Kansas. Archived(PDF) from the original on May 4, 2020. Retrieved April 24, 2020.
Kansas State Highway Department (1954). Sherman County(PDF) (Map). Scale not given. Highway & Transportation Map. Topeka: Kansas State Highway Department. Archived(PDF) from the original on May 4, 2020. Retrieved August 2, 2019.
Kansas State Highway Department (1970). Sherman County(PDF) (Map). Scale not given. Highway & Transportation Map. Topeka: Kansas State Highway Department. Archived(PDF) from the original on May 4, 2020. Retrieved April 25, 2020.
newspapers.com
"Name Elkhart as New Road Center". Morton County Progress and Rolla Progress. January 21, 1926. p. 1. Archived from the original on November 28, 2020. Retrieved November 20, 2020 – via Newspapers.com.
Kansas Department of Transportation (2019–2020). 2019–2020 Kansas State Map(PDF) (Map). Scale not given. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 20, 2020.
Bureau of Transportation Planning (2018). Traffic Flow Map Kansas State Highway System(PDF) (Map). [c. 1:1,584,000]. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 4, 2020. Retrieved April 25, 2020.
Bureau of Transportation Planning (2018). Traffic Flow Inset Map Kansas State Highway System(PDF) (Map). [c. 1:1,584,000]. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 4, 2020. Retrieved April 25, 2020.
Natzke, Stefan; Neathery, Mike; Adderly, Kevin (September 26, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Archived from the original on July 4, 2012. Retrieved April 25, 2020.
Bureau of Transportation Planning (June 2009). Morton County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (December 2010). Stanton County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (January 2011). Hamilton County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (December 2010). Greeley County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (July 2010). Wallace County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (November 2011). Sherman County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
Bureau of Transportation Planning (August 2008). Cheyenne County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Archived(PDF) from the original on May 5, 2020. Retrieved November 17, 2020.
"Name Elkhart as New Road Center". Morton County Progress and Rolla Progress. January 21, 1926. p. 1. Archived from the original on November 28, 2020. Retrieved November 20, 2020 – via Newspapers.com.
State Highway Commission of Kansas (1937). Kansas State Highway System(PDF) (Map). Scale not given. Topeka: State Highway Commission of Kansas. Archived(PDF) from the original on May 4, 2020. Retrieved April 24, 2020.
State Highway Commission of Kansas (1938). Kansas State Highway System(PDF) (Map). Scale not given. Topeka: State Highway Commission of Kansas. Archived(PDF) from the original on May 4, 2020. Retrieved April 24, 2020.
Kansas State Highway Department (1954). Sherman County(PDF) (Map). Scale not given. Highway & Transportation Map. Topeka: Kansas State Highway Department. Archived(PDF) from the original on May 4, 2020. Retrieved August 2, 2019.
Kansas State Highway Department (1970). Sherman County(PDF) (Map). Scale not given. Highway & Transportation Map. Topeka: Kansas State Highway Department. Archived(PDF) from the original on May 4, 2020. Retrieved April 25, 2020.
Special Committee on U.S. Route Numbering (November 14, 1980). "Route Numbering Committee Agenda"(PDF) (Report). Washington, DC: American Association of State Highway and Transportation Officials. p. 522 – via Wikimedia Commons.
Rand McNally and Company (1927). "Kansas" (Map). Rand McNally Auto Road Atlas of the United States and Ontario, Quebece, and the Maritime Provinces of Canada, with a Brief Description of the National Parks and Monuments. 1:1,600,000. Chicago: Rand McNally and Company. pp. 54–55. OCLC2078375 – via Rumsey Collection.
Rand McNally and Company (1924). "Kansas" (Map). AutoTrails Map, Southern Nebraska, Eastern Colorado, Kansas, Northeastern New Mexico, Northern Oklahoma. 1:1,600,000. Chicago: Rand McNally and Company. OCLC2078375. Retrieved November 19, 2020 – via David Rumsey Map Collection.