1896. Gannett, Henry, 1846-1914 and Geological Survey (U.S.). 1 map : col. ; 47 x 70 cm Shows state boundaries, principal cities, and water features. "U.S. Geological Survey. J. W. Powell, Director." "Engraved...
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1956. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1946 and 1953. Topography by plane-table surveys 1954-1955.;Relief shown by con... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1970. Geological Survey (U.S.). Spatial references;Sectional grid;Roads, waterways, major public works, railroads, land and cultural features;Relief shown by contours and spot hei... State Geological Survey Division (Urbana, Ill.) and Geological Survey (U.S.).
1945. Geological Survey (U.S.). Contour interval 10 feet.;Relief shown 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.).
1949. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1940. Topography by plane-table methods, 1946.;Contour interval 10 feet.;Relief... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).
1915. Geological Survey (U.S.). Scale 1:62,500 Relief shown by contours and spot heights. Contour interval 50 ft. "Surveyed in 1893-94." Text and ill. on verso. Department of the ... The Survey.
1904. Geological Survey (U.S.). Relief shown by contours and spot heights.; "Datum is mean sea level." sheets 69 x 110 centimeters or smaller Scale 1:31,680 General Map Collection. The Survey (Washington, D.C).
18. Camp Dodge
1918. Geological Survey (U.S.). Relief shown by contours and spot heights.; Title in upper right corner: Iowa, Camp Dodge quadrangle; at head of map: Topography.; "Surveyed in 190... The Survey (Washington, D.C).
1919. Geological Survey (U.S.). Relief shown by contours and spot heights.; Alternate title in upper right corner: Georgia, Camp Gordon and vicinity; at head of map: Topography.; ... The Survey (Washington).
1958. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken 1956. Topography by planetable surveys 1957.";Relief ... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).