Yellowstone National Forest was first established by the General Land Office on March 30, 1891 as the Yellowstone Park Timber Land Reserve of 1,239,040 acres (5,014.2 km2). On May 22, 1902 it became the Yellowstone Forest Reserve with lands of 6,580,920 acres (26,632.0 km2). In 1902 lands were exchanged with the Teton Forest Reserve and the reserve was placed under civilian administration, with the first ranger station in the nation established at Wapiti on the Shoshone River. Artist and rancher Abraham Archibald Anderson was named as the first Special Superintendent of Forest Reserves.