The first Western superstar, the taciturn Hart actually was a successful Shakespearean actor who played Messala in “Ben-Hur” on Broadway in 1899 before riding the range in movies. A longtime fan of the Old West, Hart was friends with Wyatt Earp and Bat Masterson. His film career began in 1914. After two supporting roles he gained fame as the lead in the feature-length western “The Bargain” shot on location at the Grand Canyon. Hart strove to make his westerns realistic with detailed attention played to costumes and props. Though Hart could be cast as a villain, he imbued all of his characters with honor and integrity. After making western shorts for producer Thomas Ince, he went to Famous Players-Lasky, which merged with Paramount Pictures in 1917. At Paramount he made such gritty feature westerns as “Square Deal Sanderson” and “The To...