Indiana Department of Transportation (July 2015). Reference Post Book(PDF). Indianapolis: Indiana Department of Transportation. Retrieved July 5, 2016.
Indiana State Highway Commission (1967). Indiana State Highway System (Map) (1967–1968 ed.). 1:640,000. Indiana State Highway Commission. § A10. OCLC65221593. Retrieved August 16, 2016 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1968). Indiana State Highway System (Map) (1968–1969 ed.). 1:640,000. Indiana State Highway Commission. § A10. OCLC65221736. Retrieved August 16, 2016 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1969). Indiana State Highway System (Map). 1:631,000. Indiana State Highway Commission. § A10. OCLC314731307. Retrieved August 16, 2016 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1967). Indiana State Highway System (Map) (1967–1968 ed.). 1:640,000. Indiana State Highway Commission. § A10. OCLC65221593. Retrieved August 16, 2016 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1968). Indiana State Highway System (Map) (1968–1969 ed.). 1:640,000. Indiana State Highway Commission. § A10. OCLC65221736. Retrieved August 16, 2016 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1969). Indiana State Highway System (Map). 1:631,000. Indiana State Highway Commission. § A10. OCLC314731307. Retrieved August 16, 2016 – via Indiana State Library and Historical Bureau.