2002. Geological Survey (U.S.). This raster layer is a georeferenced grid map image of land cover characteristics for North America, excluding Hawaii, and including the Caribbean ... Geological Survey (U.S.).
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2003. Geological Survey (U.S.). This point shapefile represents locations of agricultural minerals operations in the United States. The data represent commodities covered by the M... National Atlas of the United States.
2012. Geological Survey (U.S.). This point shapefile includes airports in the United States, Puerto Rico and the U.S. Virgin Islands. The data were derived from an extract of the ... Geological Survey (U.S.).
1952. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1939 and 1941. Topography by plane-table surveys 195... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1957. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1953. Topography by planetable surveys, 1956.;Includes quadrangle location map.... Geological Survey (U.S.)|Geological Survey Division(Urbana, Ill.).
1953. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1948. Topography by plane-table surveys, 1930 and 1951-1952. Includes quadrangl... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1953. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1950. Topography by plane-table surveys 1945 and 1951-1952.;Includes quadrangle... Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
1949. Geological Survey (U.S.). Relief shown by contours and spot heights. "Topography by plane-table methods 1946.";1 map, colored;45 x 35 cm.;1:62,500. Geological Survey (U.S.)|Geological Survey Division (Urbana, Ill.).
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.)|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.)|Geological Survey (U.S.).