Rockland County, New York (Fanning's, 1853)
Gazetteer/Almanac
ROCKLAND COUNTY, situated in the southeastern part of New York, with the Hudson river for its eastern boundary. Area, 172 square miles. Face of the country, mountainous and much broken; soil, productive; iron ore and variegated marble abound. Seat of justice, Clarkstown. Pop. in 1830, 9,388; in 1840, 11,975; in 1850, 16,962.
Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 313.