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Start Over Publisher Geological Survey (U.S.) Bounding Box -40.000931 39.999015 -39.999064 40.000987

21. Dwight quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1950. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken 1948. Topography by plane-table methods 1948.";Relief... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

22. Earlville quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1952. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table surveys 1951."; (W 8... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

23. Edgewood quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1957. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1953. Topography by planetable surveys 1955-1956.;Contour interval 20 feet.;Rel... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

24. Effingham quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1951. Geological Survey (U.S.). Contour interval 10 feet;"Culture and drainage in part compiled from aerial photographs taken 1938-1939. Topography by plane-table methods 1949-195... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

25. Erie quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1953. Geological Survey (U.S.). Contour interval 10 feet.;"Topography from aerial photographs by Kelsh plotter and by plane-table surveys 1952. Aerial photographs taken 1951";Reli... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

26. Fairfield quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1948. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods 1946.;Contour interval 20 feet.;Coordin... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

27. Flanagan quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1958. Geological Survey (U.S.). Culture and drainage in part compiled from aerial photographs taken 1951. Topography by planetable surveys 1957-1958.;Contour interval 10 feet.;Rel... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

28. Flora quadrangle, Illinois : 15 minute series (topographic)

Maps University Of Illinois Urbana Champaign Public content
1949. Geological Survey (U.S.). Contour interval 10 feet.;"Culture and drainage in part compiled from aerial photographs taken 1938. Topography by plane-table methods 1947-1948.";... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).