Carboniferous - Permian (Late Paleozoic) Hydrocarbon System, Rocky Mountains - Great Basin Region, U.S., Major Historic Exploration Objective, RMAG Open-File Report, James A. Peterson, Department of Geology, University of Montana. June 2001, updated 2003. This compilation of a lifetime's work in the Rocky Mountains and the Great Basin, as an industry, government, and academic geologist, is available as an Adobe Acrobat PDF file on CD. 54 pp, 45 illustrations, originally printed as an 11x17-inch document. NPS 21 , $20.00