Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 149.
HARDIN COUNTY, situated in the southeastern part of Illinois, bounded on the east and south by Ohio river. Area, 100 square miles. Seat of justice, Elizabethtown. Pop. in 1840, 1,378; in 1850, 2,887.