1954. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1938 and 1949. Topography by plane-table surveys 195... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
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1950. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1921.";Relief shown in contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Geological and Natural History Survey (Madison, Wis.).
1922. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1919-1920.";"Surveyed in cooperation with the States of Wisconsin and Illinois.";Relief shown by contours an... Geological Survey (U.S.), Geological Survey Division (Urbana, Ill.), and Geological and Natural History Survey (Madison, Wis.).
1898. Geological Survey (U.S.). Relief shown by contours. Contour interval 20 ft.; "Surveyed in 1885-86 and 95-97."; Text, "Description of the topographic map of the United States... U.S. Geological Survey (Washington?).
1917. Geological Survey (U.S.). Relief shown by contours and spot heights.; Includes notes. 117 x 106 centimeters Scale 1:31,680 General Map Collection. Department of the Interior, U.S. Geological Survey (Washington).
1929. Geological Survey (U.S.). Relief shown by contours and spot heights.; Road overprint dated "Jan. 1929" printed in red.; "Culture revised in 1927 ..."; Includes notes. 117 x ... Dept. of the Interior, U.S. Geological Survey (Washington, D.C).
1917. Geological Survey (U.S.). Surveyed in 1913-1915.; Relief shown by contours and spot heights. 124 x 112 centimeters Scale 1:31,680 General Map Collection. The Survey (Washington).
1917. Geological Survey (U.S.). Surveyed in 1913-1915.; Relief shown by contours and spot heights. 124 x 112 centimeters Scale 1:31,680 General Map Collection. The Survey (Washington).
1949. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods, 1946.";Reli... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1949. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1937, 1939 and 1941. Topography by plane-table metho... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).