Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 232-233.
MONTGOMERY COUNTY situated toward the east part of New York, and traversed by Mohawk river and the Erie canal. Area, 356 square miles. Face of the country diversified; soil rich, except where rocky. Seat of justice, Fonda. Pop. in 1810, 41,214; in 1820, 37,569; in 1830, 43,595; in 1840, 35,818; in 1850, 31,992.