Indiana Department of Transportation (July 2016). Reference Post Book(PDF). Indianapolis: Indiana Department of Transportation. Retrieved January 27, 2017.
Indiana Department of Transportation (2017). Indiana Roadway Map 2017(PDF) (Map). 1:550,000. Indianapolis: Indiana Department of Transportation. OCLC976397802. Retrieved April 2, 2017.
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Indiana State Highway Commission (1928). State Highway System of Indiana(PDF) (Map). 1:795,000. Indianapolis: Indiana State Highway Commission. OCLC31119707, 190592752. Retrieved April 2, 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 April 2, 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 April 2, 2017 – via Indiana University Bloomington Libraries.
Indiana State Highway Commission (August 1, 1930). State Highway System of Indiana (Map). Indiana State Highway Commission. Retrieved April 2, 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 April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (February 1933). State Highway System of Indiana (Map). 1:618,000. Indiana State Highway Commission. OCLC53355434. Retrieved April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (January 1934). State Highway System of Indiana (Map). 1:600,000. Indianapolis: Indiana State Highway Commission. OCLC63673890. Retrieved April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (January 1935). State Highway System of Indiana (Map). 1:615,000. Indiana State Highway Commission. OCLC63899341. Retrieved April 2, 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 April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1937). State Highway System of Indiana (Map). Indiana State Highway Commission. Retrieved April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1963). Indiana State Highway System (Map) (1963–1964 ed.). 1:633,600. Indiana State Highway Commission. OCLC883418455. Retrieved April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1964). Indiana State Highway System (Map). 1:640,000. Indiana State Highway Commission. OCLC65195866. Retrieved April 2, 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 April 2, 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 April 2, 2017 – via Indiana State Library and Historical Bureau.
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Indiana Department of Transportation (2017). Indiana Roadway Map 2017(PDF) (Map). 1:550,000. Indianapolis: Indiana Department of Transportation. OCLC976397802. Retrieved April 2, 2017.
Indiana State Highway Commission (January 1, 1932). State Highway System of Indiana (Map). 1:660,000. Indianapolis: Indiana State Highway Commission. OCLC53092152. Retrieved April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (February 1933). State Highway System of Indiana (Map). 1:618,000. Indiana State Highway Commission. OCLC53355434. Retrieved April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (January 1934). State Highway System of Indiana (Map). 1:600,000. Indianapolis: Indiana State Highway Commission. OCLC63673890. Retrieved April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (January 1935). State Highway System of Indiana (Map). 1:615,000. Indiana State Highway Commission. OCLC63899341. Retrieved April 2, 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 April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1963). Indiana State Highway System (Map) (1963–1964 ed.). 1:633,600. Indiana State Highway Commission. OCLC883418455. Retrieved April 2, 2017 – via Indiana State Library and Historical Bureau.
Indiana State Highway Commission (1964). Indiana State Highway System (Map). 1:640,000. Indiana State Highway Commission. OCLC65195866. Retrieved April 2, 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 April 2, 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 April 2, 2017 – via Indiana State Library and Historical Bureau.
worldcat.org
Indiana State Highway Commission (1928). State Highway System of Indiana(PDF) (Map). 1:795,000. Indianapolis: Indiana State Highway Commission. OCLC31119707, 190592752. Retrieved April 2, 2017 – via Indiana University Bloomington Libraries.