1943. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1911 and 1913. Culture revised in part, 1940";"Surveyed in cooperation with the States of Illinois and Misso... Bureau of Geology and Mines (Rolla, Mo.), Geological Survey (U.S.), and Geological Survey Division (Urbana, Ill.).
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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.).
1924. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1921-1922.";Relief shown by contours and spot heights.;1 map, colored;45 x 36 cm.;1:62,500. Bureau of Geology and Mines (Rolla, Mo.) and Geological Survey (U.S.).
1915. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1911 and 1913.";"Surveyed in cooperation with the States of Missouri and Illinois.";Relief shown by contours... Bureau of Geology and Mines (Rolla, Mo.), Geological Survey (U.S.), and Geological Survey Division (Urbana, Ill.).
1933. Geological Survey (U.S.). Contour interval 20 feet;"Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army";"Surveyed in 1923 and 1927";... Bureau of Geology and Mines (Rolla, Mo.), Geological Survey (U.S.), and Geological Survey Division (Urbana, Ill.).
1909. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1907.";"Surveyed in cooperation with the State of Missouri.";Relief shown by contours and spot heights.;1 ma... Bureau of Geology and Mines (Rolla, Mo.) and Geological Survey (U.S.).