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.).
Search Results
1925. Geological Survey (U.S.). Control in part from railroad valuation surveys.;"Surveyed in 1922 and 1923.";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.... 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.).
1943. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1921, 1930, and 1937-1939."; (W 89⁰00ʹ00ʺ--W 88⁰45ʹ00ʺ/N 38⁰15ʹ00ʺ--N 38⁰00ʹ00ʺ);Relief shown by contours an... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1940. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1939.";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).
1946. Geological Survey (U.S.). Contour interval 10 feet.;"Mapped by the Geological Survey 1943-1944.";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey Division (Urbana, Ill.), 1946. and U.S. Geological Survey (Washington, D.C.).
1937. Geological Survey (U.S.). Surveyed in 1930-1932.;Contour interval 10 feet.;Lacks vegetation tint.;Relief shown by contours and spot heights.;Shows highway classification as ... Geological Survey (U.S.) and Geological Survey Division (Urbana Ill.).
1933. Geological Survey (U.S.). Relief shown by contours and spot heights.;Road classification as of 1932.;1 map, colored;Contour interval 20 feet.;Surveyed in 1922, 1929, and 193... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1911. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1909.";"Surveyed in cooperation with the State of Illinois.";Relief indicated by contours and spot heights.;... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1923. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1920.";"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.).