If you look in the background when Joe Friday goes to arrest the two women. You can see the Munster House behind him.
Mother Maria also went by Fatima Goldring. Fatima cigarettes sponsored the radio version of Dragnet.
The yellow house that Ofc. Miller goes to arrest the gypsies at the end is the same house used in season two, episode 26 when Friday and Gannon go to interview Fred Hiller.
The character name Fatima Goldring is used in an Adam -12 episode for a girl exercising in leotards. This is one of several instances where the same character names were used in both series.