In this episode, Rockford reveals why he keeps his gun buried up to its hammer in a coffee pot: "Freeze dried coffee. It soaks up the moisture. Keeps it from rusting in the ocean climate." (In most episodes, however, he keeps it in the cookie jar).
(@ 14:29) "The Rockford Files" credited debut of Jack Garner, James Garner's oldest brother, who portrays the "14 cents" man in the airport restroom.
(@ 22:35) Marilyn Polonsky lives in a apartment above a garage, which is directly across the street from the Universal lot location used as the exterior for the Munsters mansion. It can be seen in the background.
At the airport, the men's room where Jim Rockford hides his jacket has pay toilets. The devices were introduced as a way to deter non-paying customers from using toilets in businesses and other facilities. By the 1980s, however, most of the United States (including California) would ban them.