Muskogee (mŭskōˈgē) [key], city (1990 pop. 37,708), seat of Muskogee co., E Okla., near the junction of the Arkansas, Verdigris, and Grand rivers; inc. 1898. It is an important transportation, trade, and industrial center in the agricultural Arkansas valley, with a modern port (opened 1971) on the McClellan-Kerr Arkansas River Navigation System. Manufactures include machinery, rubber items, food products, and consumer goods. Of interest are the Five Civilized Tribes Museum and gardens in Honor Heights Park; an antique car museum; and nearby Fort Gibson (1824, restored), with its national cemetery.