Highwood Mountains National Forest
Highwood Mountains National Forest was established as the Highwood Mountains Forest Reserve by the U.S. Forest Service in Montana on April 12, 1906 with 45,080 acres (182.4 km2). It became a National Forest on March 4, 1907. On July 1, 1908 the entire forest was combined with Little Belt, Snowy Mountains and Little Rockies National Forests to establish Jefferson National Forest (Montana) and the name was discontinued. The lands are now included in Lewis and Clark National Forest. 
The forest is part of the Jefferson Division of Lewis and Clark National Forest. The Highwood Mountains are included in the unit, primarily in Chouteau and Judith Basin Counties. A Wilderness Study Area has been designated in the Highwoods.
- Davis, Richard C. (September 29, 2005). "National Forests of the United States" (PDF). The Forest History Society. Archived from the original (pdf) on February 12, 2013.
- "Maps and Brochures". Lewis and Clark National Forest. U.S. Forest Service. 2008-08-23.
- "About Us". Lewis and Clark National Forest. U.S. Forest Service. 2008-08-23.
- Lewis and Clark National Forest
- Forest History Society
- Listing of the National Forests of the United States and Their Dates (from the Forest History Society website) 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.