Norris, P. W. _Annual Report of the Superintendent of Yellowstone National Park._ Washington, D.C.: Government Printing Office, 1878, 1879, 1880, 1881.
_Reports of the Acting Superintendent of the Yellowstone National Park._ Washington, D.C.: Government Printing Office, 1885 to 1915.
_Reports of the Secretary of the Interior._ Washington, D.C.: Government Printing Office, 1872 to 1941.
_Reports of the Superintendents of Yellowstone National Park._ Washington, D.C.: Government Printing Office, 1917 to 1943.
_Rules, Regulations and Instructions_ for the officers and enlisted men of the United States Army, and of the scouts doing duty in the Yellowstone National Park. Department of Interior, Washington, D.C.: Government Printing Office, 1907.
Sherman, W. T. and Sheridan, P. H. _Reports of Inspection Made in the Summer of 1877._ Washington, D.C.: Government Printing Office, 1878.
_Yellowstone National Park Bulletins._ Department of the Interior, Washington, D.C.: Government Printing Office, 1914, 1915, 1916, 1918, 1923, 1939, 1940, 1941.
Allen, Eugene T. and Day, Arthur L. _Hot Springs of the Yellowstone National Park._ Washington, D.C.: Carnegie Institution, 1935.
Alter, J. Cecil. _James Bridger, Trapper, Frontiersman, Scout and Guide._ Salt Lake City: Shepard Book Co., 1925.
Arnold, Ross R. _Indian Wars in Idaho._ Caldwell, Idaho: Caxton Printers, 1929.
Bennett, Hugh H. "Thomas Jefferson Soil Conservationist." _U.S. Department of Agriculture_, No. 548. Washington, D.C.: Government Printing Office, 1944.
Catlin, George. _North American Indians_, I, II. Philadelphia: Leary Stuart and Co., 1913.
Crampton, Louis C. _Early History of Yellowstone National Park and Its Relations to National Park Policies._ Washington, D.C.: United States Printing Office, 1923.
DeSmet, P. J. _Oregon Missions and Travels Over the Rocky Mountains._ New York: Edward Dreneger, 1847.
De Voto, Bernard. _Across the Wide Missouri._ Boston: Houghton Mifflin Co., 1947.
Drew, Benjamin. _Souvenir List of Yellowstone Park Holdup Victims._ Park Library, Mammoth, Wyoming.
Fee, Chester Anders. _Chief Joseph, the Biography of a Great Indian._ New York: Wilson-Erickson, 1936.
Freeman, Lewis R. _Down the Yellowstone._ New York: Dodd, Mead and Co., 1922.