Factual error: Walter Prescott accuses Hoss of "two-timing" him with a mail-order bride. This episode is set in the mid-1860s and, according to the Merriam-Webster dictionary, the expression "two-timing" dates from 1924.
Bonanza (1959)
1 factual error in season 4 - chronological order
Starring: Lorne Greene, Michael Landon, Pernell Roberts, Dan Blocker
Springtime - S3-E2
Continuity mistake: While Adam and Ted Hackett are talking on the front porch, in the exterior shot we can see the tablecloth inside the house is solid white, but in the interior shots the tablecloth has a red/white check type pattern. (00:31:15)
Adam Cartwright: Let's go back to the Ponderosa, Pa. This isn't any of our affair.
Ben Cartwright: We can't ignore the rest of the world. We're the only stabilizing influence in the country.
Mrs. Wharton and the Lesser Breeds - S10-E17
Trivia: A portion of the background music used during an outdoor scene in the town of Vallejo was later used as the theme song for "Little House On The Prairie."
Question: How could one of the three have been in prison during the murder at the barbershop? Did he have a twin?