Stephenson County, Illinois (Fanning's, 1853)
Gazetteer/Almanac
STEPHENSON COUNTY, situated on the north boundnry of Illinois, and traversed by Pekatonica river. Area, 500 square miles. Seat of justice, Freeport. Pop. in 1840, 2,800; in 1850, 11,666.
Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 313.