Factual error: Lucas and Mark are traveling on what is said to be the first train to ever reach the town of North Fork. The episode is set in the 1880s and the train shown was part of the M.K. & T. Railroad, which at that time was operating only in Missouri, Kansas, Texas and Oklahoma. The fictional town of North Fork is located in New Mexico Territory.
The Rifleman (1958)
1 factual error in The Sixteenth Cousin
Starring: Chuck Connors, Johnny Crawford, Paul Fix
Continuity mistake: During most of the show Billy is wearing a shirt and vest. When he starts to go outside to face his ex partner it shows him wearing the vest. When he stands up to go outside he has coat on. When he gets outside he's back in the vest.