• Illinois, Sycamore quadrangle

    Geological Survey (U.S.)

    Contour 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

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  • Illinois (Champaign County), Urbana quadrangle : topography

    Geological Survey (U.S.)

    Contour 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

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  • Wapello quadrangle, Iowa-Illinois : 15 minute series (topographic)

    Geological Survey (U.S.)

    Contour 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

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  • Illinois, Jerseyville quadrangle

    Geological Survey (U.S.)

    Relief shown by contours and spot heights. Road classification as of 1932. 1 map, colored Contour interval 20 feet. Surveyed in 1922, 1929, and 1930.

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  • Illinois (Greene County), Roodhouse quadrangle.

    Geological Survey (U.S.)

    Contour interval 20 feet. "Surveyed in 1924" Relief shown by contours and spot heights. 1 map, colored

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  • Illinois, Wheaton quadrangle : topography

    Geological Survey (U.S.)

    Contour interval 10 feet. "Surveyed in 1906." "Surveyed in cooperation with the State of Illinois." Relief indicated by contours and spot heights. 1 map, colored

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  • Missouri-Illinois, Weingarten quadrangle : topography

    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 map, colored

    View Full Item  in University of Illinois at Urbana-Champaign Library
  • Illinois-Kentucky, Brownfield quadrangle : topography

    Geological Survey (U.S.)

    Surveyed in 1914-1915. "Surveyed in cooperation with the State of Illinois." Relief shown by contours and spot heights. 1 map, colored

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  • Illinois, Arenzville quadrangle

    Geological Survey (U.S.)

    Contour interval 20 feet. "Surveyed in 1927 and 1929." Relief shown by contours and spot heights. Road classification 1932. 1 map, colored

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  • Rochelle quadrangle, Illinois : 15 minute series (topographic)

    Geological Survey (U.S.)

    Contour 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

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  • Illinois, Orion quadrangle.

    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 1930-1932" Relief shown by contours and spot heights. 1 map, color…

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  • Illinois, Jacksonville quadrangle

    Geological Survey (U.S.)

    Surveyed 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

    View Full Item  in University of Illinois at Urbana-Champaign Library
  • Illinois-Iowa, Keithsburg quadrangle

    Geological Survey (U.S.)

    Contour 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…

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  • Illinois, Colchester quadrangle : topography

    Geological Survey (U.S.)

    Contour interval 20 feet. "Surveyed in 1911." (W 91⁰00ʹ00ʺ--W 90⁰45ʹ00ʺ/N 40⁰30ʹ00ʺ--N 40⁰15ʹ00ʺ) Relief shown by contours. 1 map, colored

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  • Illinois, Woodhull quadrangle : 15-minute series

    Geological Survey (U.S.)

    Contour interval 20 feet. "Mapped by the Geological Survey 1945" Relief shown by contours and spot heights. 1 map, colored

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  • Illinois, Herscher quadrangle

    Geological Survey (U.S.)

    Control in part from railroad valuation surveys. "Surveyed in 1922 and 1923." Relief shown by contours and spot heights. 1 map, colored

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  • Illinois (Knox County), Maquon quadrangle : 15-minute series

    Geological Survey (U.S.)

    Contour interval 20 feet. "Surveyed in 1930 and 1941" Relief shown by contours and spot heights. 1 map, colored

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  • Illinois, Brighton quadrangle

    Geological Survey (U.S.)

    Surveyed in 1922 and 1924-1925. Relief shown by contours and spot heights. Road classification "July. 1927." 1 map, colored

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  • Illinois, Cave in Rock quadrangle

    Geological Survey (U.S.)

    Contour interval 20 feet. "Surveyed in 1914." "Surveyed in cooperation with the State of Illinois." Relief shown by contours. 1 map, colored

    View Full Item  in University of Illinois at Urbana-Champaign Library
  • Illinois-Wisconsin, Grays Lake quadrangle : topography

    Geological Survey (U.S.)

    Contour 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

    View Full Item  in University of Illinois at Urbana-Champaign Library
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