Martin indicates that Patty's birthday is in December, which actually corresponds to the real Patty Duke's birthday, i.e. December 14.
Martin uses the phrase 'message to Garcia', which was a popular slang expression, meaning 'to undertake an almost impossible task'. The expression derives from Elbert Hubbard's essay detailing the mission U.S. Intelligence Officer Lt. Andrew Rowan undertook to get a message from President William McKinley to General Calixto García Íñiguez of Cuba during the Spanish-American War.
Bobby Diamond appears here in the credits as a waiter at the malt shop. Later in the season, i.e. in Too Young and Foolish to Go Steady (1966), he plays Louie, the proprietor at the malt shop, which is otherwise known as Louie's Ice Cream Parlor. Earlier in the season, Louie was played by Ronnie Schell in Our Daughter the Artist (1965).