1930. Geological Survey (U.S.). Contour interval 10 feet;"Surveyed in 1926-1927.";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
Search Results
1933. Geological Survey (U.S.). Contour interval 10 feet;"Surveyed in 1929"; (W 89⁰00ʹ00ʺ--W 88⁰45ʹ00ʺ/N 40⁰00ʹ00ʺ--N 39⁰45ʹ00ʺ);Relief shown by contours and spot heights.;Shows r... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1918. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1916.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1958. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1919-1920, in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 map, col... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1926. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1924";Relief shown by contours and spot heights.;1 map, colored;45 x 36 cm.;1:62,500. Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1906. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1905.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours.;1 map, colored;45 x 3... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1925. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1923";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1948. Geological Survey (U.S.). Contour interval 20 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 (U.S.)|Geological Survey Division (Urbana, Ill.).
1944. Geological Survey (U.S.). Road classification as of 1943.;"Contour interval 10 feet";"Surveyed in 1921 and 1941";Relief shown by contours and spot heights.;1 map, colored;45... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1943. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1930-1931 and 1939.";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).