Search results for 1955-1956   
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Illinois Maps Topograp... (1)
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1. Edgewood quadrangle, Illinois : 15 minute series (topographic) Edgewood quadrangle, Illinois : 15 minute series (topographic) Illinois; Maps; Topographic maps; Topography; Edgewood (Ill.) Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1953. Topography by planetable surveys 1955-1956."; Contour interval 20 feet.

2. Newman quadrangle, Illinois : 15 minute series (topographic). Newman quadrangle, Illinois : 15 minute series (topographic). Newman (Ill.); Illinois; Maps; Topographic maps; Topography Relief shown by contours and spot heights.; "Culture and drainage in part compiled from aerial photographs taken 1953-1954. Topography by planetable surveys 1955-1956."; "Contour interval 10 feet."
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