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Mount Vernon (City of Illinois)
a city of Illinois, the county-seat of Jefferson co., about 75 miles E. of St. Louis, Mo. It is situated on the Louisville and Nashville, the Chicago and Eastern Illinois, the Southern, and the Wabash, Chester, and Western railroads. The city contains a court house, a library, and a park. Its chief industries are coal mining, agriculture, car and machine-shop products, glass, hosiery, etc. Pop. (1910) 8,007; (1920) 9,815.