Illinois State Highway Department (1917). Map Showing Marked Through Routes in Illinois (Map). Scale not given. Springfield: Illinois State Highway Department – via Illinois Digital Archives.
1921
Illinois Secretary of State (1921). Map Showing Marked Through Routes in Illinois (Map). Scale not given. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1922
Illinois Secretary of State (1922). Map Showing Marked Through Routes in Illinois (Map). Scale not given. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1923
Illinois Secretary of State (1923). Illinois Official Auto Trails Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1.
1924
Illinois Secretary of State (1924). Illinois Official Auto Trails Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1925
Illinois Secretary of State (1925). Illinois Official Auto Trails Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1926
Illinois Secretary of State; Rand McNally (1926). Illinois Official Auto Road Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1927
Illinois Secretary of State; Rand McNally (1927). Illinois Official Auto Road Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1928
Illinois Secretary of State; H.M. Gousha (1928). Illinois Official Auto Road Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1929
Illinois Secretary of State; H.M. Gousha (1929). Illinois Official Auto Road Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1930
Illinois Secretary of State (1930). Official Illinois Highway Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1931
Illinois Secretary of State (1931). Official Illinois Highway Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1932
Illinois Secretary of State (1932). Official Illinois Highway Map (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1933
No year defined.
1934
Illinois Secretary of State; Rand McNally (1934). Official Road Map Illinois (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1. OCLC183709045 – via Illinois Digital Archives.
1935
Illinois Secretary of State; H.M. Gousha (1935). Official Road Map Illinois (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1936
Illinois Secretary of State; Rand McNally (1936). Road Map Illinois (Map). [c. 1:950,000 and c. 1:1,110,000]. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1937
Illinois Department of Public Works (1937). Illinois Official Highway Map(PDF) (Map) (1937 ed.). Springfield: Illinois Department of Public Works. § A1.
1938
Illinois Department of Public Works (1938). Illinois Official Highway Map(PDF) (Map) (1938 ed.). Springfield: Illinois Department of Public Works. § A1.
1939
Illinois Secretary of State; Rand McNally (1939). Illinois Road Map (Map) (1939–1940 ed.). c. 1:918,720. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1940
Illinois Secretary of State; Rand McNally (1940). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1941
Illinois Department of Public Works (1941). Illinois Official Highway Map(PDF) (Map) (1941 ed.). Springfield: Illinois Department of Public Works. § A1.
1942
Illinois Secretary of State; Rand McNally (1942). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1946
Illinois Secretary of State; Rand McNally (1946). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1947
Illinois Secretary of State; Rand McNally (1947). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1948
Illinois Secretary of State; Rand McNally (1948). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1949
Illinois Department of Public Works (1949). Illinois Official Highway Map(PDF) (Map) (1949 ed.). Springfield: Illinois Department of Public Works. § A1.
1950
Illinois Secretary of State; Rand McNally (1950). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1951
Illinois Secretary of State; Rand McNally (1951). Illinois Road Map (Map). c. 1:918,720. Springfield: Illinois Secretary of State. § A1 – via Illinois Digital Archives.
1952
Illinois Department of Public Works (1952). Illinois Official Highway Map(PDF) (Map) (1952 ed.). Springfield: Illinois Department of Public Works. § A1.
1953
Illinois Division of Highways (1953). Illinois Official Highway Map (Map). [1:805,000]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1954
Illinois Division of Highways (1954). Illinois Official Highway Map (Map). [1:805,000]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1955
Illinois Division of Highways (1955). Illinois Official Highway Map (Map). [1:805,000]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1956
Illinois Division of Highways (1956). Illinois Official Highway Map (Map). [1:805,000]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1957
Illinois Division of Highways; H.M. Gousha (1957). Illinois Official Highway Map (Map). [1:805,000]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1958
Illinois Division of Highways; H.M. Gousha (1958). Illinois Official Highway Map (Map). [1:805,000]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1959
Illinois Division of Highways; H.M. Gousha (1959). Illinois Official Highway Map (Map). [1:790,00]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1960
Illinois Division of Highways; H.M. Gousha (1960). Illinois Official Highway Map (Map). [1:790,00]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1961
Illinois Division of Highways; H.M. Gousha (1961). Illinois Official Highway Map (Map). [1:790,00]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1962
Illinois Division of Highways; H.M. Gousha (1962). Illinois Official Highway Map (Map). [1:790,00]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1963
Illinois Division of Highways; H.M. Gousha (1963). Illinois Official Highway Map (Map). [1:790,00]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1964
Illinois Division of Highways; Rand McNally (1964). Illinois Official Highway Map (Map). [1:757,500]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1965
Illinois Division of Highways; Rand McNally (1965). Illinois Official Highway Map (Map). [1:757,500]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1966
Illinois Division of Highways; Rand McNally (1966). Illinois Official Highway Map (Map). [1:772,500]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1967
Illinois Division of Highways; Rand McNally (1967). Illinois Official Highway Map (Map). [1:772,500]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1968
Illinois Division of Highways (1968). Illinois Official Highway Map (Map). [1:772,500]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1969
Illinois Division of Highways; Rand McNally (1969). Illinois Official Highway Map (Map). [1:772,500]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1970
Illinois Division of Highways; Rand McNally (1970). Illinois Official Highway Map (Map). [1:772,500]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1971
Illinois Division of Highways; Rand McNally (1971). Illinois Official Highway Map (Map). [1:772,500]. Springfield: Illinois Division of Highways. § A1 – via Illinois Digital Archives.
1972
Illinois Department of Transportation (1972). Illinois Official Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1973
Illinois Department of Transportation (1973). Illinois Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1975
Illinois Department of Transportation (1975). Illinois Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1977
Illinois Department of Transportation (1977). Illinois Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1979
Illinois Department of Transportation (1979). Illinois Highway Map (Map). [1:772,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1983
Illinois Department of Transportation (1983). Illinois Highway Map (Map) (1983–1984 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1985
Illinois Department of Transportation (1985). Illinois Highway Map (Map) (1985–1986 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1987
Illinois Department of Transportation (1987). Illinois Highway Map (Map) (1987–1988 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1989
Illinois Department of Transportation (1989). Illinois Highway Map (Map) (1989–1990 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1991
Illinois Department of Transportation (1991). Illinois Highway Map (Map) (1991–1992 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1993
Illinois Department of Transportation (1993). Illinois Highway Map (Map) (1993–1994 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1995
Illinois Department of Transportation (1995). Illinois Highway Map (Map) (1995–1996 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1997
Illinois Department of Transportation (1997). Illinois Highway Map (Map) (1997–1998 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
1999
Illinois Department of Transportation (1999). Illinois Highway Map (Map) (1999–2000 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
2001
Illinois Department of Transportation (2001). Illinois Highway Map (Map) (2001–2002 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
2003
Illinois Department of Transportation (2003). Illinois Highway Map (Map) (2003–2004 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
2005
Illinois Department of Transportation (2005). Illinois Highway Map (Map) (2005–2006 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
2007
Illinois Department of Transportation (2007). Illinois Highway Map (Map) (2007–2008 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1. OCLC244286974 – via Illinois Digital Archives.
2009
Illinois Department of Transportation (2009). Illinois Highway Map (Map) (2009–2010 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
2011
Illinois Department of Transportation (2011). Illinois Highway Map (Map) (2011–2012 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
2013
Illinois Department of Transportation (2013). Illinois Highway Map (Map) (2013–2014 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1 – via Illinois Digital Archives.
2015
Illinois Department of Transportation (2015). Illinois Official Highway Map(PDF) (Map) (2015–2016 ed.). [1:762,500]. Springfield: Illinois Department of Transportation. § A1.
