Stuart, Robert. The Discovery of the Oregon Trail. New York: Charles Scribner’s Sons, 1935.
Synge, Georgina. A Ride Through Wonderland. London: Sampson Low, Marston & Co., 1892.
Turrill, Gardner S. A Tale of the Yellowstone. Jefferson, Iowa: G. S. Turrill Publishing Co., 1901.
Vaughn, Robert. Then and Now. Minneapolis: Tribune Printing Co., 1900.
Wingate, George W. Through Yellowstone Park on Horseback. New York: O. Judd Co., 1886.
Wislizenus, F. A. A Journey to the Rocky Mountains in 1839. St. Louis, Mo.: Missouri Historical Society, 1912.
ARTICLES IN MAGAZINES AND PERIODICALS
Baker, Ray S. “A Place of Marvels,” The Century Magazine, LXVI (August, 1903).
Bauer, C. Max. “Notes on Indian Occupancy,” Yellowstone Nature Notes, Vol. XII, No. 6 (June, 1935).
Bryce, James. “National Parks the Need for the Future,” The Outlook, CII (Dec. 14, 1912).