Cook, C. W. “Valley of the Upper Yellowstone,” Western Monthly, IV (July, 1870).

Cook, C. W. and Folsom, D. E. “Cook-Folsom Expedition to the Yellowstone Region 1869,” Haynes Bulletin, Jan., 1923.

Elmendorf, Dwight L. The Mentor, II (May 15, 1915).

Everts, Truman C. “Thirty Seven Days of Peril,” Scribner’s Monthly, III (Nov., 1871).

Freeman, L. R. “Protect the Game in Yellowstone Park,” Recreation, XV (Dec. 1901).

Ghent, W. J. “A Sketch of John Colter,” Wyoming Annals, Vol. X, No. 3 (July, 1938).

Gibbon, Colonel John. “The Battle of the Big Hole,” Harper’s Weekly (Dec. 21, 1895).

Hague, Arnold. “Soaping Geysers,” Science, XIII (May 17, 1889).

Hague, Arnold. “The Yellowstone National Park,” Scribner’s, XXXV (May, 1904).

Hayden, F. V. “More About the Yellowstone,” Scribner’s Monthly, III (February, 1872).