Johnny Lace's beach house is the same beach house that David Todd lives in from Vamp 'til Ready (1961).
Louis Quinn (Roscoe) and Christine Nelson (Moonbeam) were married years before. This was her third guest appearance of the four (all in different roles) she would make on the show between 1959 and 1962. They died a month apart in 1988, she at 60 in Aug., and he at 73 in September.