Other mistake: The pot belly stove in the Sheriff's office has the stovepipe exiting through the front wall, there is no stovepipe or chimney showing on the front of the building?
Gunsmoke (1955)
1 mistake in show generally - chronological order
Starring: James Arness, Ken Curtis, Amanda Blake, Milburn Stone
Dr. Galen 'Doc' Adams: I'll tell you why the Hagens live so long.
Festus Haggen: Why?
Dr. Galen 'Doc' Adams: 'Cause they're too dumb to know they're dead.
Trivia: Although they played father and son in this episode, Jack Elam was only six years older than Harry Dean Stanton.