Wyatt Earp, Frontier Marshal #66

Marshal Wyatt Earp confronts the ruthless outlaw Ambrose Barken, known as "The Tycoon," who claims to be the most powerful man in the West and has brought in a replacement marshal to challenge Earp's authority. After a series of confrontations involving gunfights and a standoff on a moving train, Earp manages to stop the locomotive and regain control, forcing Barken and his hired marshal to surrender their weapons. The story concludes with Earp reasserting his position as marshal of Redhill, with Barken subdued and the town's order restored.