Hayden National Forest
Hayden National Forest was established by the U.S. Forest Service in Colorado and Wyoming on July 1, 1908 with 454,911 acres (1,840.96 km2), mostly in Wyoming from Sierra Madre National Forest and part of Park Range National Forest. On August 2, 1929 the entire forest was divided between Medicine Bow National Forest and Routt National Forest and the name was discontinued. 
- Davis, Richard C. (September 29, 2005), National Forests of the United States (pdf), The Forest History Society
- Forest History Society
- Forest History Society:Listing of the National Forests of the United States Text from Davis, Richard C., ed. Encyclopedia of American Forest and Conservation History. New York: Macmillan Publishing Company for the Forest History Society, 1983. Vol. II, pp. 743-788.
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