(WY.) Geologic Map of Wyoming, U.S.G.S, 1925
This is the first great wave of Oil & Gas exploration and production that would become a foundation to the regional economy. With a detailed base map, the major geology and plenty of manuscript additions, this is a working piece of history that documents the fields and domes across the state. Even the sub-title of the map acknowledges great minds from the U.S.G.S., as well as the "manuscript maps in the Geological Survey records, and data furnished by oil compnies and consulting engineers". This is a comprehensive overview.
Condition is good, backed on linen, has some expected soiling and wear with some worn corners with minor loss. Color is still strong. Overall size is approximately 41 x 57.75 (inches)