Before taking the role of Amanda Bellows, Emmaline Henry appeared in this episode as a magician's assistant (the magician was played by Bernard Fox, "Dr. Bombay" from Bewitched (1964)).
Two actresses in this episode return to the series later in different roles. Emmaline Henry plays Myrt, the magician's assistant and the following season, beginning with The World's Greatest Lover (1966), begins a recurring role as Amanda Bellows. Judy Carne plays Dr. Bellows' niece, Sheila, and later returns in The Biggest Star in Hollywood (1969) playing herself as part of the cast of Rowan & Martin's Laugh-In (1967).
The closeup of the phone as it's dialing reveals that Tony's phone number is 783-3369. No area code.