U.S. Geological Survey, 1964, The Hebgen Lake, Montana, earthquake of August 17, 1959: US Geological Survey Professional Paper 435, 242 pages. U.S. Geological Survey, 1972, Geologic map of Yellowstone National Park: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-711 (in press). White, D. E., 1967, Some principles of geyser activity, mainly from Steamboat Springs, Nevada: American Journal of Science, volume 265, number 8, pages 641-684. ★ U. S. GOVERNMENT PRINTING OFFICE: 1972 O-467-725 [Illustration: U. S. DEPARTMENT OF THE INTERIOR · March 3, 1849] Transcriber’s Notes —Retained publication information from the printed edition: this eBook is public-domain in the country of publication. —Corrected a few palpable typos. —Included a transcription of the text within some images. —Renumbered footnotes, and modified references to them accordingly. —In the text versions only, text in italics is delimited by _underscores_. End of the Project Gutenberg EBook of The Geologic Story of Yellowstone National Park, by William R. Keefer