Episode 13 aired on NBC Radio December 13, 1953. The Six Shooter was an unusual western series starring James Stewart as Brit Ponsit. Britt treads the boards in the service of the bard for P. T. Barnum himself. The Six Shooter, the only radio series starring James Stewart, although he made numerous radio appearances. First aired on NBC Radio on September 20, 1953, the series lasted for one season, producing only 39 episodes.