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Start Over Subject Railroads Publisher Geological Survey Division (Urbana, Ill.) Bounding Box -180 -89.81531 180 89.456192

1. Illinois, Herscher quadrangle

Maps University Of Illinois Urbana Champaign Public content
1925. Geological Survey (U.S.). Control in part from railroad valuation surveys.;"Surveyed in 1922 and 1923.";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

2. Illinois-Wisconsin, McHenry quadrangle

Maps University Of Illinois Urbana Champaign Public content
1926. Geological Survey (U.S.). Relief shown by contours and spot heights.;"Control in part from railroad valuation surveys, Surveyed in 1924";Contour interval 10 feet.;1 map, col... Geological Survey Division (Urbana, Ill.) and Geological Survey (U.S.).

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