The Lone Ranger's Famous Horse Hi-Yo Silver #19

In "How Silver Treed Keenay," the legendary horse Silver finds himself caught between forces far beyond his control when the wild mare Yegua escapes the Sioux only to fall into the hands of the careless Bobby Wardle. Taken from the plains and broken to the saddle for the Pony Express, Yegua endures hardship until Wardle’s injury forces him to set her free. Cover by Sam Savitt, this 1956 Dell classic captures the spirit of the frontier with quiet intensity.