Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 50.
BRECKENRIDGE COUNTY, situated on the northerly boundary of Kentucky, on the southerly side of Ohio river. Length, 38 miles; mean breadth 20, with an area of 760 square miles. The face of the country is broken, and the soil generally fertile. Seat of justice, Hardensburgh. Pop. in 1820, 7,485; in 1830, 7,345; 1840, 8,994; in 1850, 10,593.