High Quality Content by WIKIPEDIA articles! The Wallowa–Whitman National Forest is a United States National Forest in Oregon. Formed by a merger of the formerly separate Wallowa and Whitman national forests, it is located in the northeastern corner of the state, in Wallowa, Baker, Union, Grant, and Umatilla counties in Oregon, and includes small areas in Nez Perce and Idaho counties in Idaho. The forest is named for the Wallowa band of the Nez Perce, who originally lived in this area, and Marcus and Narcissa Whitman, Presbyterian missionaries who settled north of here in 1836. Forest headquarters are located in Baker City, Oregon.