Bureau of Transportation Planning (2000). Neosho County(PDF) (Map). [c. 1:211,200]. General Highway Map. Topeka: Kansas Department of Transportation. Retrieved March 9, 2022.
Bureau of Transportation Planning (2004). Traffic Flow Map Kansas State Highway System(PDF) (Map). [c. 1:1,584,000]. Topeka: Kansas Department of Transportation. Retrieved April 22, 2020.
newspapers.com
"Area Items". The Iola Register. Iola, Kansas. December 6, 1957. p. 4. Retrieved March 9, 2022 – via Newspapers.com.