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Illinois Maps Topograp... (1)
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1. Xenia quadrangle, Illinois : 15 minute series (topographic) Xenia quadrangle, Illinois : 15 minute series (topographic) Maps; Topographic maps; Topography; Illinois; Xenia (Ill.) Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1938 and 1949. Topography by plane-table surveys 1951-1952"; "Contour interval 10 feet."...

2. Arrowsmith quadrangle, Illinois : 15 minute series (topographic) Arrowsmith quadrangle, Illinois : 15 minute series (topographic) Illinois; Maps; Topographic maps; Topography; Arrowsmith (Ill.) Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1948. Topography by plane-table surveys, 1930 and 1951-1952." Includes quadrangle location...

3. Assumption quadrangle, Illinois : 15 minute series (topographic) Assumption quadrangle, Illinois : 15 minute series (topographic) Illinois; Maps; Topographic maps; Topography; Assumption (Ill.) Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1950. Topography by plane-table surveys 1945 and 1951-1952."; Includes quadrangle location...
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