DOVER, a town of Morris county, New Jersey, on the Rock away river, 4om. W.N.W. of Jersey City, at an altitude of 57oft. It has an airport and is served by the Central of New Jersey and the Lackawanna railways. The population was 9,803 in 192o; in 193o it was i o,031. Iron is mined in the vicinity, and the town has large railroad shops and important manufactures, including hosiery, silk, bar iron, furnaces and ranges, boilers, bridges, drills and air compressors. Dover was settled as early as 1748 and was separately incorporated in 1869.