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Start Over Year 1925 Publisher Bureau of Geology and Mines (Rolla, Mo.) Bounding Box -180 -89.81531 180 89.456192

1. Missouri-Illinois, Altenburg quadrangle

Maps University Of Illinois Urbana Champaign Public content
1925. Geological Survey (U.S.). Control in part by Mississippi River Commission.;"Surveyed in 1915 and 1922.";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.... Bureau of Geology and Mines (Rolla, Mo.), Geological Survey (U.S.), and Geological Survey Division (Urbana, Ill.).