Last Train to the Fair - S1-E30
Factual error: At the end of the episode as the train heads towards Sacramento, above in the sky are jet vapor trails streaking across the sky.
The Big Valley (1965)
1 factual error in season 1 - chronological order
Starring: Lee Majors, Linda Evans, Richard Long, Peter Breck
Genres: Western
Continuity mistake: When Audra takes lemonade to Will inside the place where he's working as a forger, the pitcher has a liquid which is the true color of lemonade and there's not much left in the pitcher...less than 1/4 of what it could hold. When she comes out of the building, it has the color of iced tea and there's almost half a pitcher of it, which is way more than there should be.
Heath: Boy Howdy! I've got blisters in places I didn't even know I had places.