Based upon the short story "The Old Man" by Henry Slesar. Though it was copyrighted in 1962, the story went unpublished until 1980, when it appeared in the anthology Microcosmic Tales from Taplinger Pub. Co.
This episode takes place in 1974.
The Main protagonist of this episode is called Goldsmith. Jerry Goldsmith was one of the composers working on the show, and years later he scored Twilight Zone: The Movie (1983).
John Marley and James Coburn previously worked together in "The Case of the Angry Astronaut" on "Perry Mason."