Covers Wisconsin from the Illinois state line to Lake Winnebago.; Depths shown by contours.; Shows areas of marshes, sand, moraines, glacial drifts, and locations of eskers, drumlins, and sand, gravel, and clay pits.; Includes text.; "House Doc. No. 64th Cong. 2d. Sess."; "Based on original field notes of Wm. C. Alden and assistants. Some local details including a few bearings of glacial striae compiled from published reports of Wisconsin Geological Survey and Wisconsin Academy of Science. T. C. Chamberlin, geologist in charge. 69 x 84 Centimeters, on sheet 97 x 76 Centimeters Scale 1:250,000 General Map Collection