Library, 1961. Kelsey, Harry E., Jr. "Clay Allison: Western Gunman," Brand Book of the Denver Westerners, 1957. Parsons, Chuck, Clay Allison: Portrait of a Shootist, Seagraves, Texas: Pioneer Book Publishers, 1983. Parsons, Chuck, "Clay Allison, Vigilante," Real West, August 1982. Rasch, Philip J., "Chunk Colbert, Clay Allison Dined, Chunk Died." NOLA Quarterly, Vol. II, No. 4, Winter 1976. Rasch, Philip J., "Sudden Death in Cimarron." NOLA Quarterly, Vol. X, No. 4, Spring 1986. External links True Story of Clay Allison and Wyatt Earp, Dodge City Footstone which reads: "He never killed a man that did not need killing" Gunslingers of the American Old West 1841 births 1887 deaths American folklore Cowboys People from Sedalia, Missouri People from Waynesboro, Tennessee People of Tennessee in the American Civil War People from Colfax County, New Mexico People from Hemphill County, Texas People from Dodge City, Kansas Road incident deaths in Texas