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?
Prior to the establishment of the National Park Service, the U.S. Army protected Yellowstone between 1886 and 1918. Fort Yellowstone was established at Mammoth Hot Springs for that purpose.