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961. Illinois, West Frankfort quadrangle : topography

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1909. Geological Survey (U.S.). 1 map, colored;Relief indicated by contours and spot heights.;Contour interval 20 feet.;"Surveyed in 1906-1907.";Surveyed in cooperation with the S... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

962. Illinois, Wheaton quadrangle : topography

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1908. 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.;... Geological Survey (U.S.) and Geological Survey Division (Urbana, Ill.).

963. Illinois, Wilmington quadrangle : topography

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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 Division (Urbana, Ill.) and Geological Survey (U.S.).

964. Illinois, Wilmington sheet

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1892. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1890.";Relief indicated by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).

965. Illinois, Winchester quadrangle

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1926. Geological Survey (U.S.). Contour interval 20 feet.;"Surveyed in 1921 and 1924.";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.).

966. Illinois, Woodhull quadrangle : 15-minute series

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1947. Geological Survey (U.S.). Contour interval 20 feet.;"Mapped by the Geological Survey 1945";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.).

967. Illinois, Yorkville quadrangle

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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.).

968. Illinois-Indiana, Birds quadrangle : topography

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1917. Geological Survey (U.S.). Surveyed in 1914.;"Surveyed in cooperation with the State of Illinois.";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.).

969. Illinois-Indiana, Calumet quadrangle : topographic sheet

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1901. Geological Survey (U.S.). Contour interval 10 feet;"Surveyed in 1889, 1897 and 1899.";Relief shown by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).

970. Illinois-Indiana, Calumet sheet

Maps University Of Illinois Urbana Champaign Public content
1892. Geological Survey (U.S.). Contour interval 10 feet.;"Surveyed in 1889.";Relief shown by contours.;1 map, colored;45 x 34 cm.;1:62,500. Geological Survey (U.S.).