Ekalaka National Forest was established as the Ekalaka Forest Reserve in Montana on November 5, 1906 with 33,808 acres (136.82 km2). It became a National Forest on March 4, 1907. On July 1, 1908 it was absorbed by Sioux National Forest and the name was discontinued.
The forest today comprises the Ekalaka Hills unit of the Sioux Ranger District of Custer National Forest, in Carter County, southeast of Ekalaka.
References
Ekalaka National Forest Wikipedia(Text) CC BY-SA