1 map : color; 48 x 35 cm
Scale 1:62,500 (W 90°30ʹ--W 90°15ʹ/N 42°30ʹ--N 42°15ʹ). ; Relief indicated by contours and spot heights.; 'R.B. Marshall, Chief Geographer. W.H. Herron, Geographer in charge. Topography by Mississippi River Commission, Illinois State Geological Survey, Frank Tweedy, B.A. Jenkins, and Geo. Hoffman. Control by Mississippi River Commission, L.E. Tucker, and Henry Bucher. Surveyed in 1909 and 1911. Geology by E.W. Shaw and A.C. Trowbridge, assisted by B.H. Schockel. Surveyed in 1910 and 1911.' ; Edition of Mar. 1915.