Bulletin 961, Geological Survey, United States Dept of the Interior. Printed at the GPO, Washington, 1949. This geological survey is bound in wraps and is in good condition and contains illustrations, diagrams, fold-out maps in rear pocket, etc. Previously housed in a university library, never in circulation. I have photographed the content pages so you can see what the book covers. 86 pages. 6"x9" ttxx.