1 map : color; 45 x 34 cmScale 1:62,500 (W 88°15ʹ--W 88°00ʹ/N 41°45ʹ--N 41°30ʹ). ; Detached from: Geology and mineral resources of the Joliet quadrangle / D.J. Fisher. Urbana : State of Illinois, Dept. of Registration and Education, Div. of the State Geological Survey, 1925. Bulletin (Illinois State Geological Survey) no. 51.; Relief shown by contours and spot heights.; 'Surveyed in 1921.'; Includes two cross sections.; 'Bulletin no. 51, plate I.'9980772866502441ark:/81985/n2z894f73State of Illinois, Dept. of Registration and Education, State Geological Survey Div.PublicGeology, EconomicEconomic and surficial geology of the Joliet quadrangleMapsIllinois--Joliet Region1925Northwestern University