You are bidding on this original Geologic Atlas of The United States. This is Number Johnstown Pa Folio by W.C. Phalen. Published by the Department of Interior U.S. Geogical Survey Washington DC in 1911. Containes 212 pages of information and illustrations. Also contains the maps: First map is the Structure and Economic Geology Johnstown Quadrangle. This plate is published by The Uunited States Geological Survey in 1910. The second map is  The Areal Geology Survey Johnstown Quadrangle. Published in May 1910. The third map is The Topographical Map Johnstown Quadrangle. Published MAy 1910. All in all in very good condition. Some minor wear. MAkes an excellent addition to any collection.