The Four Sixes Ranch is part of the famous Burnett Ranches LLC, which is among the most storied family-run businesses in Texas history. Founded by Captain Samuel "Burk" Burnett in 1868 - when he purchased 100 head of cattle wearing the "6666" brand from Frank Crowley of Denton, Texas - Burnett Ranches today encompasses 275,000 acres near Panhandle and Guthrie. Superbly bred cattle and champion horses grace its pastures, and oil flows from its depths.