This is the second of three appearances Jack Elam makes in the series, each time appearing as different character, but always a hoodlum.
This is the first of three appearances Paul Genge makes in the series, each time playing a gangster of some sort. Classic film aficionados will note that perhaps his best remembered role as a gangster is in the Steve McQueen movie Bullitt (1968) where Mr. Genge plays one of the hitmen who dies at the end of the chase scene when the car he is in explodes into a fiery ball.