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871. Illinois, Delavan quadrangle : 15-minute series

Maps University Of Illinois Urbana Champaign Public content
1942. Geological Survey (U.S.). Contour interval 10 feet;"Surveyed in 1930 and 1935-1936.";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey Division (Urbana, Ill.), 1942. and U.S. Geological Survey (Washington, D.C.).

872. Illinois, Des Plaines sheet

Maps University Of Illinois Urbana Champaign Public content
1890. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1889-90.";Relief indicated by contours.;1 map, colored;45 x 34 cm.;1:62,500. U.S. Geological Survey (U.S.).

873. Illinois, Divernon quadrangle

Maps University Of Illinois Urbana Champaign Public content
1957. Geological Survey (U.S.). Contour interval 10 feet;"Surveyed in 1922.";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division, (Urbana, Ill.).

874. Illinois, Dixon quadrangle : topography

Maps University Of Illinois Urbana Champaign Public content
1918. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1916.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 ma... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

875. Illinois, Dongola quadrangle

Maps University Of Illinois Urbana Champaign Public content
1958. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1919-1920, in cooperation with the State of Illinois.";Relief shown by contours and spot heights.;1 map, col... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

876. Illinois, Dunlap sheet

Maps University Of Illinois Urbana Champaign Public content
1893. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1891.";Relief indicated by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).

877. Illinois, Duquoin quadrangle

Maps University Of Illinois Urbana Champaign Public content
1926. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1924";Relief shown by contours and spot heights.;1 map, colored;45 x 36 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

878. Illinois, Eldorado quadrangle : topography

Maps University Of Illinois Urbana Champaign Public content
1906. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1905.";"Surveyed in cooperation with the State of Illinois.";Relief shown by contours.;1 map, colored;45 x 3... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

879. Illinois, Elgin quadrangle

Maps University Of Illinois Urbana Champaign Public content
1925. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1923";Relief shown by contours and spot heights.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

880. Illinois, Elmwood quadrangle : 15-minute series

Maps University Of Illinois Urbana Champaign Public content
1948. Geological Survey (U.S.). Contour interval 20 feet;"Mapped by the Geological Survey 1943-1944";Relief shown by contours and spot heights.;1 map, colored;45 x 35 cm.;1:62,500. Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

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