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.).
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1970. Geological Survey (U.S.). Color 7.5 Minute series (topographic) Rising quadrangle;Relief shown by contours and spot heights.;Roads, waterways, major public works, railroads,...