CAHALANE, V. H. Meeting the Mammals. The MacMillan Company, 1943.
DALQUEST, W. W. Mammals of Washington. University of Kansas, 1948.
FREEMAN, O. W. and MARTIN, H. H., editors. The Pacific Northwest. John Wiley & Sons, Inc., 1942.
GILKEY, H. M. Handbook of Northwest Flowering Plants. Oregon State College, 1947.
HASKIN, L. L. Wildflowers of the Pacific Coast. Binfords & Mort, 1934.
HAZARD, J. T. Snow Sentinels of the Pacific Northwest, pp. 37-63. Lowman & Hanford Co., 1932.
JAMES, HARLEAN. Romance of the National Parks, pp. 112-123. The MacMillan Co., 1939.
JOHNSON, MURRAY L. and JOHNSON, SHERRY. Check List of Mammals of the Olympic Peninsula. The Murrelet, Sept.Dec. 1952.
JONES, G. N. A Botanical Survey of the Olympic Peninsula, Washington. University of Washington Press, 1936.
KITCHIN, E. A. Birds of the Olympic Peninsula. Olympic Stationers, Port Angeles, Wash., 1949.
PEATTIE, RODERICK, editor. The Pacific Coast Ranges. The Vanguard Press, 1946.
PETERSON, R. T. A Field Guide to Western Birds. Houghton Mifflin Co., 1941.
RICKETTS, E. F., and CALVIN, JACK. Between Pacific Tides. Stanford University Press, 1948.
SUDWORTH, G. B. Forest Trees of the Pacific Slope. Government Printing Office, 1908.
TILDEN, FREEMAN. The National Parks and What They Mean to You and Me, pp. 81-90. Alfred A. Knopf, 1951.
UNDERHILL, RUTH. Indians of the Pacific Northwest. Sherman Institute Press, 1945.