Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 83.
CLARKE COUNTY, situated on the southeast boundary of Indiana, on the northwest side of Ohio river. Area, 400 square miles. Face of the country hilly; soil generally productive. Seat of justice, Charleston. Pop. in 1820, 8,079; in 1830, 10,686; in 1840, 14,595, in 1850, 15,828.