1943. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1936, 1937, and 1942";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
Search Results
1924. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1914.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours.;1 map, colored;45 x 3... Geological Survey (U.S.) and State Geological Survey (Urbana, Ill.).
1914. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1908 and 1912.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot ... Geological Survey (U.S.) and State Geological Survey (Urbana, Ill.).
1906. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1905.";"Surveyed in cooperation with the State of Illinois.";Includes "diagram of township.";Relief indicate... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1932. Geological Survey (U.S.). Contour interval 20 feet.;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army.";"Surveyed in 1924, 1928, 1... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1891. Geological Survey (U.S.). Contour interval 5 feet.;"Surveyed in 1889.";Relief indicated by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).
1913. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1911."; (W 91⁰00ʹ00ʺ--W 90⁰45ʹ00ʺ/N 40⁰30ʹ00ʺ--N 40⁰15ʹ00ʺ);Relief shown by contours.;1 map, colored;45 x 35... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1901. Geological Survey (U.S.). Contour interval 5 feet.;"Surveyed in 1889, 1897 and 1899.";Relief indicated by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).
1899. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1897.";Relief indicated by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).
1917. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1914.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heights.;... Geological Survey (U.S.) and State Geological Survey (Urbana, Ill.).