UNITED STATES DEPARTMENT OF THE INTERIOR
Stewart L. Udall, Secretary
NATIONAL PARK SERVICE
Conrad L. Wirth, Director
NATURAL HISTORY HANDBOOK NUMBER THREE
This publication is one of a series of handbooks explaining the natural history of scenic and scientific areas in the National Park System administered by the National Park Service, U.S. Department of the Interior. It is printed by the Government Printing Office and may be purchased from the Superintendent of Documents, Washington, D.C., 20401
Price 35 cents
ROCKY MOUNTAIN
NATIONAL PARK · COLORADO
By Edwin C. Alberts
NATURAL HISTORY HANDBOOK SERIES NO. 3
Washington, D.C., 1954 (Revised 1963)