Search results for 1952. > Erie (Ill.)   
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1. Erie quadrangle, Illinois : 15 minute series (topographic) Erie quadrangle, Illinois : 15 minute series (topographic) Illinois; Maps; Topographic maps; Topography; Erie (Ill.) Relief shown by contours and spot heights.; "Topography from aerial photographs by Kelsh plotter and by plane-table surveys 1952. Aerial photographs taken 1951"; "Contour interval 10 feet."
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