Illinois, Sycamore quadrangle
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 10 feet "Surveyed in 1929 and 1933-1934" Relief shown by contours and spot heights. Shows roadway classification as of 1936. 1 map, colored
Illinois (Champaign County), Urbana quadrangle : topography
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 10 feet. "Surveyed in 1905." "Surveyed in cooperation with the State of Illinois." Includes "diagram of township." Relief indicated by contours and spot heights. 1 map, colored
Wapello quadrangle, Iowa-Illinois : 15 minute series (topographic)
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 10 feet. "Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods, 1946." Relief shown by contours and spot heights. 1 map, colored
Illinois, Jerseyville quadrangle
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryRelief shown by contours and spot heights. Road classification as of 1932. 1 map, colored Contour interval 20 feet. Surveyed in 1922, 1929, and 1930.
Illinois (Greene County), Roodhouse quadrangle.
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 20 feet. "Surveyed in 1924" Relief shown by contours and spot heights. 1 map, colored
Illinois, Wheaton quadrangle : topography
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 10 feet. "Surveyed in 1906." "Surveyed in cooperation with the State of Illinois." Relief indicated by contours and spot heights. 1 map, colored
Missouri-Illinois, Weingarten quadrangle : topography
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 20 feet. "Surveyed in 1907." "Surveyed in cooperation with the State of Missouri." Relief shown by contours and spot heights. 1 map, colored
Illinois-Kentucky, Brownfield quadrangle : topography
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibrarySurveyed in 1914-1915. "Surveyed in cooperation with the State of Illinois." Relief shown by contours and spot heights. 1 map, colored
Illinois, Arenzville quadrangle
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 20 feet. "Surveyed in 1927 and 1929." Relief shown by contours and spot heights. Road classification 1932. 1 map, colored
Rochelle quadrangle, Illinois : 15 minute series (topographic)
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 10 feet. "Culture and drainage in part compiled from aerial photographs taken 1951. Topography by plane-table surveys 1952" Relief shown by contours and spot heights. 1 map, colored
Illinois, Orion quadrangle.
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 20 feet. "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army." "Surveyed in 1930-1932" Relief shown by contours and spot heights. 1 map, color…
Illinois, Jacksonville quadrangle
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibrarySurveyed in 1930-1932. Contour interval 10 feet. Lacks vegetation tint. Relief shown by contours and spot heights. Shows highway classification as of 1935. 1 map, colored
Illinois-Iowa, Keithsburg quadrangle
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour intervals 10 and 20 feet changing on the 580 foot contour. "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army." "Surveyed in 1921, 1931, 1934, and 193…
Illinois, Colchester quadrangle : topography
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 20 feet. "Surveyed in 1911." (W 91⁰00ʹ00ʺ--W 90⁰45ʹ00ʺ/N 40⁰30ʹ00ʺ--N 40⁰15ʹ00ʺ) Relief shown by contours. 1 map, colored
Illinois, Woodhull quadrangle : 15-minute series
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 20 feet. "Mapped by the Geological Survey 1945" Relief shown by contours and spot heights. 1 map, colored
Illinois, Herscher quadrangle
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryControl in part from railroad valuation surveys. "Surveyed in 1922 and 1923." Relief shown by contours and spot heights. 1 map, colored
Illinois (Knox County), Maquon quadrangle : 15-minute series
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 20 feet. "Surveyed in 1930 and 1941" Relief shown by contours and spot heights. 1 map, colored
Illinois, Brighton quadrangle
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibrarySurveyed in 1922 and 1924-1925. Relief shown by contours and spot heights. Road classification "July. 1927." 1 map, colored
Illinois, Cave in Rock quadrangle
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 20 feet. "Surveyed in 1914." "Surveyed in cooperation with the State of Illinois." Relief shown by contours. 1 map, colored
Illinois-Wisconsin, Grays Lake quadrangle : topography
Geological Survey (U.S.)View Full Item in University of Illinois at Urbana-Champaign LibraryContour interval 10 feet. "Surveyed in 1919-1920." "Surveyed in cooperation with the States of Illinois and Wisconsin." Relief shown by contours and spot heights. 1 map, colored