 The formerly-named Pitchfork Land and Cattle Company was organized in 1883, and SMS ranches were established during the same time frame.The 6666 (called Four Sixes Ranch), also founded in 1883, was managed from 1965–1986 by George Humphreys, who was also affiliated with the National Ranching Heritage Center in Lubbock.Dumont was formed in the late 19th century.