EDWARDSVILLE, a city of Illinois, U.S.A., 18m. N.E. of Saint Louis, near Cahokia creek; the county seat of Madison county. It is on Federal highway 66, and is served by the Nickel Plate and the Wabash and electric railways. The population was 5,336 in 192o and it was 6.235 in 193o by the Federal census. Coal is mined near by (3,530,848 tons in 1926), and it has numerous manufacturing industries, including canneries, marble works, flour and planing mills, brick and tile plants and factories making woodwork, brass, radiators, shirts and powdered milk. Adjoining Edwardsville is the plant of the N. 0. Nelson Manu facturing company (plumbers' supplies, etc.), and the co-opera tive village Leclaire (unincorporated; pop. about 2,000) founded in by Nelson 0. Nelson for his employes, with various wel fare features in the village and some degree of profit-sharing in the business. Edwardsville was settled in 1812, laid out in 1815, and named after Ninian Edwards, governor of the Territory at the time. It was incorporated in 1819. The prehistoric Monk's mound is near.