1892. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1890.";Relief indicated by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).
Search Results
1937. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army.";Relief shown by contours a... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1945. Geological Survey (U.S.). Contour interval 20 feet.;"Mapped by the Geological Survey 1942";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.).
1931. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1926, 1927, and 1928";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.).
1893. Geological Survey (U.S.). Surveyed in 1891.;Relief indicated by contours.;Contour interval 10 feet.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).
1943. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1936 and 1937, Culture revised in part, 1942";Relief shown by contours and spot heights.;1 map, colored;45 x... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1918. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1915.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1892. Gannett, Henry, 1846-1914, Harrison, D. C., and Renshawe, John H. Contour interval 10 feet.;"Surveyed in 1890.";Relief indicated by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).
1940. 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 1927 and 1933-... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1915. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1913";"Surveyed in cooperation with the State of Illinois."; (W 89⁰45ʹ00ʺ--W 89⁰30ʹ00ʺ/N 39⁰15ʹ00ʺ--N 39⁰00ʹ... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).