Dan Evans is the Charlie Brown of the post-Civil War American west. He just can’t win. His wife looks at him with disappointment and disdain. His eldest son thinks he’s a lily-livered coward. His creditors bully and insult him. Even nature thumbs her nose at him, refusing to give him the rain he needs to water the pastures that could feed his starving cattle. Only his youngest son still looks at him with admiration, mostly…