Barnaby reveals he is from North Carolina.
Barnaby's house is shown. Apparently he has two homes as it's different than his ranch house. It must be in the city since he stops there on the way to drive Stanley Lambert from the night club back to Stanley's apartment.
A few short months later, Marlyn Mason would play a very similar alcoholic character in The Manhunters (1973).
Originally a Japanese legend, the title refers to the three monkeys who "See no evil, hear no evil and speak no evil".