Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 200.
LYCOMING COUNTY, situated toward the north part of Pennsylvania, and traversed by West branch of Susquehanna river. Area, 1,600 square miles. Face of the country hilly and broken; soil in the valleys, fertile. Seat of justice, Williamsport. Pop. in 1810, 11,006; in 1820, 13,517; in 1830, 17,673; in 1840, 22,649; in 1850, 26,257.