1970. Geological Survey (U.S.). Spatial references;Sectional grid;Roads, waterways, major public works, railroads, land and cultural features;Relief shown by contours and spot hei... State Geological Survey Division (Urbana, Ill.) and Geological Survey (U.S.).
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1925. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1921 and 1923.";Relief shown by contours and spot heights.;1 map, colored;45 x 36 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1910. Geological Survey (U.S.). Surveyed in 1908.;"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heights.;1 map, colored;45 x 36 cm.;1... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1900. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1897.";Relief indicated by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1925. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1923.";Relief shown by contours and spot heights.;1 map, colored;45 x 36 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1921. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1914, 1916 and 1920.";"Surveyed in cooperation with the States of Kentucky and Illinois."; (W 88⁰30ʹ00ʺ--W 8... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Kentucky Geological Survey (Lexington, Ky.).
1925. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1903.";Relief shown by contours, spot heights and bathymetric soundings.;1 map, colored;45 x 70 cm.;1:62,500. Geological Survey (U.S.).
1952. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1939 and 1941. Topography by plane-table surveys 195... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1957. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1953. Topography by planetable surveys, 1956.;Includes quadrangle location map.... Geological Survey (U.S.) and Geological Survey Division(Urbana, Ill.).
1953. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1948. Topography by plane-table surveys, 1930 and 1951-1952. Includes quadrangl... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).