Indiana Department of Transportation (July 2016). Reference Post Book(PDF). Indianapolis: Indiana Department of Transportation. Retrieved January 9, 2017.
Indiana Department of Transportation (2016). Indiana Roadway Map 2016(PDF) (Map). 1:550,000. Indianapolis: Indiana Department of Transportation. OCLC925532510. Retrieved January 20, 2017.
Indiana State Highway Commission (1928). State Highway System of Indiana(PDF) (Map). 1:795,000. Indianapolis: Indiana State Highway Commission. OCLC31119707, 190592752. Retrieved January 19, 2017 – via Indiana University Bloomington Libraries.
Indiana State Highway Commission (September 30, 1930). State Highway System of Indiana(PDF) (Map). Indianapolis: Indiana State Highway Commission. Retrieved January 19, 2017 – via Indiana University Bloomington Libraries.
Indiana State Highway Commission (September 30, 1932). State Highway System of Indiana(PDF) (Map). Indianapolis: Indiana State Highway Commission. Retrieved January 19, 2017 – via Indiana University Bloomington Libraries.
Indiana State Highway Commission (1930). State Highway System of Indiana (Map). Indiana State Highway Commission. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (January 1, 1932). State Highway System of Indiana (Map). 1:660,000. Indianapolis: Indiana State Highway Commission. OCLC53092152. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (January 1936). State Highway System of Indiana (Map). 1:630,000. Indianapolis: Indiana State Highway Commission. OCLC63897436. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1937). State Highway System of Indiana (Map). Indiana State Highway Commission. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1938). State Highway System of Indiana (Map). 1:630,000. Indiana State Highway Commission. OCLC64017142. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1939). State Highway System of Indiana (Map). 1:633,600. Indiana State Highway Commission. OCLC64016573. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1966). Indiana State Highway System (Map) (1966–1967 ed.). 1:640,000. Indiana State Highway Commission. OCLC65209231. Retrieved January 19, 2017 – 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. OCLC65221593. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
worldcat.org
Indiana Department of Transportation (2016). Indiana Roadway Map 2016(PDF) (Map). 1:550,000. Indianapolis: Indiana Department of Transportation. OCLC925532510. Retrieved January 20, 2017.
Indiana State Highway Commission (1928). State Highway System of Indiana(PDF) (Map). 1:795,000. Indianapolis: Indiana State Highway Commission. OCLC31119707, 190592752. Retrieved January 19, 2017 – via Indiana University Bloomington Libraries.
Indiana State Highway Commission (January 1, 1932). State Highway System of Indiana (Map). 1:660,000. Indianapolis: Indiana State Highway Commission. OCLC53092152. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (January 1936). State Highway System of Indiana (Map). 1:630,000. Indianapolis: Indiana State Highway Commission. OCLC63897436. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1938). State Highway System of Indiana (Map). 1:630,000. Indiana State Highway Commission. OCLC64017142. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1939). State Highway System of Indiana (Map). 1:633,600. Indiana State Highway Commission. OCLC64016573. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1966). Indiana State Highway System (Map) (1966–1967 ed.). 1:640,000. Indiana State Highway Commission. OCLC65209231. Retrieved January 19, 2017 – 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. OCLC65221593. Retrieved January 19, 2017 – via Indiana State Library and Historical Bureau.