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 Image: Title: Subject: Description:
1. Illinois, Ramsey quadrangle : 15-minute series. Illinois, Ramsey quadrangle : 15-minute series. Ramsey (Ill.); Illinois; Maps; Topographic maps; Topography 1 map : col.; Relief shown by contours and spot heights.; "Mapped by the Geological Survey, 1922 and 1942-1944"; "Contour interval 20 feet."
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