Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 105.
DES MOINES COUNTY, situated in the southeast part of Iowa, with Mississippi river on the east, and Chickahoma river on the southwest. Area, 410 square miles. Seat of justice, Burlington. Pop. in 1840,6,577 ; in 1850, 12,987.