Nebo National Forest was established by the U.S. Forest Service in Utah on July 1, 1908 with 343,920 acres (1,391.8 km2) from the consolidation of Payson and Vernon National Forests and part of Fillmore. On July 1, 1915 the entire forest was transferred to Manti National Forest. The lands presently exist in Manti-La Sal National Forest.
References
Nebo National Forest Wikipedia(Text) CC BY-SA