Illinois Road Maps issued by various Oil Companies:
1925 – Texaco
1931 – Barnsdall
1932 – Standard
1934 – Phillips 66
1934 – Standard
1935 – Phillips 66
1936 – Phillips 66
1936 – Diamond
1937 – Finkles Station
1937 – City Service
1938 – Standard
1938 – Standard
1939 – Sinclair
1944 – Sinclair
1946 – D-X
1950 – Shell
1953 – Mobilgas
1961 – Phillips 66