Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1950. Softcover. Item #43992
Includes a summary of the geologic features of producing and potential oil fields. 185 pages with index plus the required twenty-three plates are present, six of which are in the rear pocket. Stamp of geologist Maynard F. Ayler on the front cover, along with the stamp of A.W. Cullen, Denver, Colo. on the front cover. A very good copy.