Russell, Carl P. “Scientists and Scientific Investigations in Yellowstone National Park,” Department of the Interior, 1933.

Sedgwick, Henry D. “On Horse Back Through Yellowstone,” World’s Work, VI (June, 1903).

Smith, George O. “The Nation’s Playgrounds,” Review of Reviews, XL (July, 1909).

Staffer, Alvin P. and Porter, Charles W. “The National Park Service Program of Conservation for Areas and Structures of National Historical Significance,” The Mississippi Valley Historical Review, XXX, 1 (June, 1943).

Warner, Charles D. “The Yellowstone National Park,” Harper’s, XCIV (January, 1897).

GOVERNMENT REPORTS AND PUBLICATIONS

Barlow, J. W. and Heap, D. P. Report of Barlow and Heap 1871. Washington, D.C.: Government Printing Office, 1872.

Congressional Globe. 42 Congress, 2nd Session, 1871-72. Part I, Washington, D.C.: Government Printing Office, 1872.

Congressional Record. 43 Congress, Session I, Washington, D.C.: Government Printing Office, 1874.

Laws and Regulations relating to the Yellowstone National Park, Wyoming, by the Secretary of the Interior. Washington, D.C.: Government Printing Office, 1908.