CAMBRIDGE, a city and the county-seat of Guernsey county, Ohio, U.S.A., on Wills Creek, about 75 m. E. by N. of Columbus. Pop. (1890) 4361; (1900) 8241, of whom 407 were foreign-born; (1910 census) 11,327. It is served by the Baltimore & Ohio and the Pennsylvania railways, and is connected by an electric line with Byesville (pop. in 1910, 3156), about 7 m. S. Cambridge is built on a hill about 800 ft. above sea-level. There is a public library. Coal, oil, natural gas, clay and iron are found in the vicinity, and among the city’s manufactures are iron, steel, glass, furniture and pottery. The value of its factory products in 1905 was $2,440,917. The municipality owns and operates the water-works. Cambridge was first settled in 1798 by emigrants from the island of Guernsey (whence the name of the county); was laid out as a town in 1806; was incorporated as a village in 1837; and was chartered as a city in 1893.