Did You Know?
[Who was brought on as a guest on the 13th season of Gunsmoke
(1955), before joining the cast for real, later that same year]: They liked me (from that guest appearance) so much they decided to test me as Newly O'Brien, who was a gunsmith and U.S. Deputy Marshal. Six months later, I was on the show.
Western character actor who is best remembered for his eight seasons (1967-1975) as gunsmith Newly O'Brien on the classic series Gunsmoke