Visible crew/equipment: During the closing scene, just as the deputy starts to walk towards the right of the screen, if you look between the two buildings, you can see the top of what appears to be a bus riding by.
Continuity mistake: Walter Burke leaves the balcony last, but has moved forward one place when the view switches to inside. Also, the closed door has partly opened. (00:05:50)
Factual error: Purdy is always wearing a bra with hook and eye in the back. These bras were not patented until 1911, much later than when the movie is depicted. (01:12:20)
Continuity mistake: When the Danby clan rides into town to get Joe out of jail, they ride up to the sheriff's office and get down from their horses. Pa Danby sends his other 2 sons inside to "get Joe." They come just three seconds later and all of the horses are gone. (01:22:10)