Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 82.
CLARK COUNTY, situated toward the southwest part of Arkansas, between Little Missouri and Wachita rivers. Area, 1,500 square miles. Seat of justice, Greenville. Pop. in 1830, 1,369; in 1840, 2,309; in 1850, 4,011.