French title : "Le grand réseau".
This is the third of five appearances Cyril Delevanti makes in this series, each time playing a bit part as an attendant of some kind, flop house, men's room, newsstand, etc.
This is the second of eight appearances Oscar Beregi Jr. makes in the series and the first of seven times he plays the role of Joe Kulak. In his first appearance in Jack 'Legs' Diamond (1960), he plays the role of Oscar Benjamin.
This is the first of eight appearances Grant Richards makes in the series. For most of these appearances, he takes on the persona of different characters. In three of his appearances, he plays the hoodlum Frankie Resko.
This is the first of four appearances Milton Selzer makes in the series, each time playing a different character. In a few years from the original airing of this episode, he would become more familiar to TV audiences with his recurring role as Parker in the TV secret-agent-spy sitcom Get Smart (1965).