The surname of character Assistant DA Morgan Tallman is an homage to actor William Talman (1915-68), who played District Attorney Hamilton Burger on Perry Mason (1957) from 1957 - 1966.
The black 1971 Ford sedan driven by Ralph Correll's goons was originally white. The white door jambs are visible when they exit the car just before rousting Rockford in front of his trailer.
The road to Pacific Grove where the Firebird drives by the sign is the road to Paradise Cove off the Pacific Coast Highway.
The episode opens with scenes of a large German Shepherd-type dog walking towards the location of Jim's trailer. The dog appears to be wearing a collar but there is no apparent reason for its presence in this episode.
Jim gives the birthdate of character Barbara Kelbaker (Joan Van Ark) as August 13, 1949. Actress Joan Van Ark's actual birthdate is June 16, 1943, making her six years older than the character she portrays.