COFFEYVILLE, a city of Montgomery county, in south eastern Kansas, U.S.A., on the Verdigris river, near the southern boundary of the State. It is on Federal highway 166, and is served by the Missouri Pacific, the Santa Fe, the Missouri-Kan sas-Texas, and the Union Traction (electric) railways. The popu lation in 1925 (State census) was 16,229; and was 16,198 in It is in the mid-continent gas and oil field and the Kansas coal-field; is a railway division point and an important grain centre ; and has oil refineries, zinc smelters, flour and meal mills, tile and vitrified brickworks, tank-car factories, wagon and car riage factories and other industries. The aggregate output of its factories in 1925 was valued at Coffeyville was founded in 1869 and incorporated in 1872. It was named after A. M. Coffey, an important citizen in the early days of the territory. After the railway came through it became a shipping point for cattle from Texas and Indian Territory and a trade centre for a wide area. Natural gas was discovered in 1892.