The Geologic Story of Yellowstone National Park, by William R. Keefer 60574 [Subtitle: Geological Survey Bulletin 1347] [Link: http://www.gutenberg.org/6/0/5/7/60574 ] [Files: 60574-8.txt; 60574-0.txt; 60574-h.htm] Thanks to Stephen Hutcheson and the Online Distributed Proofreading Team at http://www.pgdp.net Regards, Al