This was the final film former MGM costume designer Irene worked on. She committed suicide the fall of 1962 prior to the release of this film. Irene provided a very simple understated wardrobe for British actress Mary Peache in this film.
The scene where Mary Peach's character goes out "on the town" shows her exiting a theater into a grand lobby where she meets friends. That lobby is the actual foyer of the San Francisco Opera House, which looks virtually the same to this day.
Jerry Goldsmith's opening fanfare was licensed by Cinema International Corporation (CIC) for its vanity plate fanfare. CIC was an international film distribution company, part owned by Universal (with Paramount and, later, Metro-Goldwyn-Mayer).