PITTSBURG, a city of Kansas in Crawford co., about 130 miles S. of Kansas City. It is on the Atchison, Topeka and Santa Fe, the Missouri Pacific, the St. Louis and San Francisco, the Joplin and Pittsburg, and the Kansas City Southern railroads. The city is in an extensive coal mining region. Among its industries are foundry and machine shops, lumber mills, packing houses, etc. There is a public library, a State normal manual training school. Pop. (1910) 14,755; (1920) 18,052.