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Illinois Maps Topograp... (1)
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Mount Olive (Ill.); Il... (1)

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1. Stewardson quadrangle, Illinois : 15 minute series (topographic) Stewardson quadrangle, Illinois : 15 minute series (topographic) Maps; Topographic maps; Topography; Illinois; Stewardson (Ill.) Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1939. Topography by plane-table methods 1935 and 1947"; "Contour interval 20 feet." Coordinates:...

2. Missouri-Illinois, Hannibal quadrangle Missouri-Illinois, Hannibal quadrangle Illinois; Maps; Topographic maps; Topography; Hannibal (Mo.); Missouri Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken by Air Corps, U.S. Army."; "Surveyed in 1921 and 1928."; "Contour interval 20 feet."; Coordinates:...

3. Illinois, Mount Olive quadrangle : topography. Illinois, Mount Olive quadrangle : topography. Mount Olive (Ill.); Illinois; Maps; Topographic maps; Topography Relief indicated by contours and spot heights.; "Surveyed in 1913"; "Surveyed in cooperation with the State of Illinois."; "Contour interval 20 feet."; Coordinates: (W 89⁰45ʹ00ʺ--W 89⁰30ʹ00ʺ/N...
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