Terry Gross talks with writer Allen Barra ("Bear-ah"), the author of "Inventing Wyatt Earp: His Life and Many Legends" (Carroll & Graff Publishers). It tells the story of the famous sometime lawman and the shootout at the O.K. Corral at Tombstone, Arizona where Wyatt Earp was the only man left standing. Barra is a sports columnist for the Wall Street Journal.