You are bidding on this original Geologic Atlas of The United States. This is Number 5 New Castle Pa Folio by F. W. DeWolf. Published by the Pennsylvania Geological Survey in 1929 Contains 238 pages of information, foldouts and illustrations. Front cover is disattached. Also contains 5 maps: First map is Topographic and Geologic  Map of New Castle Pa Quadrangle. This plate is published in 1928. The second map is  Topographic and Geological Survey (Showing Surficial Geology) Map of New Castle Quadrangle. Published in 1928. The third map is The Topographic and geologic Survey (Showing Areal Geologic Map of New Castle Quadrangle. Published 1928. The fourth map is The Topographic and Geologic Survey (Showing Economic Geology and Structural ) map of New Castle Quadrangle. This plate published in 1928. Thje fifth map is Topographic and Geologic Survey (Showing Oil and Gas Map) of New Castle Quadrangle. Published in 1928.  All in all in very good condition. Some minor wear. Some minor rips at folds. See pictures.  Makes an excellent addition to any collection.