Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 83.
CLAY COUNTY, situated toward the southeast part of Kentucky. Area, 880 square miles. Face of the country hilly; soil very rocky, but in some parts productive. Seat of justice, Manchester. Pop. in 1820, 4,393; in 1830, 3,549; in 1840, 4,607; in 1850, 5,421.