A History of Administrative Development in Yellowstone National Park, 1872-1965
Historic Resource Study, Volume III
Park Administrative History, Part I
By Kiki Leigh Rydell and Mary Shivers Culpin National Park Service, Yellowstone Center for Resources Yellowstone National Park, Wyoming YCR-CR-2006-03, 2006
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Did You Know?
Yellowstone contains approximately one-half of the world’s hydrothermal features. There are over 10,000 hydrothermal features, including over 300 geysers, in the park.