When discussing the state of children's television programming, Dietrich mentions a show called "Vermin, Vermin, Vermin". This joke is most likely a reference to the show Animals, Animals, Animals (1976), a nature documentary series for children that was hosted by Hal Linden.
One of the few times in his career Ron Glass appeared on screen without his mustache, Detective Harris finally drawing unavoidable decoy duty as a person who wouldn't typically have one.
In season 2, episode 5, Heat Wave (1975), another cross-dressing detail was assigned to the squad in order to catch a rapist. In that episode, Capt. Miller says, "We all agreed, Harris is going to go last. In deference to his mustache."