Fanning's Illustrated Gazetteer of the United States.... (New York: Phelps, Fanning & Co., 1853), 108.
DUKES COUNTY, situated at the southeasterly part of Massachusetts, and comprehends Martha’s Vineyard, Chippequiddick, Noman’s Land, and Elizabeth islands in the Atlantic ocean. Area, 120 square miles. Face of the country level; soil generally poor, much of it overgrown with scrub oaks. Seat of justice, Edgarton. Pop. in 1810, 3,290; in 1820, 3,292; in 1830, 3,518; in 1840, 3,958; in 1850, 4,540.