Clark National Forest was a National Forest in Missouri established on September 11, 1939 with 1,971,885 acres (7,979.9 km2). On July 1, 1973 it was administratively combined with Mark Twain National Forest, and on February 17, 1976 it was absorbed by Mark Twain.[1]
The forest was named after Champ Clark, a state legislator.[2]