Search

Start Over Subject Railroads Year 1926 Bounding Box -40.000931 39.999015 -39.999064 40.000987

1. 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.).