Visible crew/equipment: The first time we see Fogg the shadow of the camera operator (film director?) and camera sliding smoothly along tracks is perfectly visible.
Visible crew/equipment: When Hackman rises from the ground after the last explosion, a guy is in the upper right corner standing on a balcony holding a device with an antenna (probably a remote device for explosions). He is visible almost four seconds. (01:38:23)
Continuity mistake: Otter Bob holds out a bottle of liquor at Isaiah after he kills a bear. In the close-up, Bob is holding the bottle by the neck. In the wide shot, he's holding it by the body.
Continuity mistake: During the election meeting held at the saloon, there's a large sign that reads "Capitol City Here We Come" on the wall by the stairs. We see this sign in numerous shots. When Valance enters the saloon there's still a sign on that wall by the stairs, but now the painted handwriting on this sign is different. Moreover, the original sign that had been by the stairs is now up on the side wall of the saloon, where Valance and his thugs stand; note the handwriting. (01:09:20 - 01:13:45)
Continuity mistake: Juliano and Joaquin are having their pictures taking celebrating the first earnings from their own gold pit. All of a sudden between shots, the photographer loses the cigarette behind his ear. (00:18:50)
Continuity mistake: David Hackett is talking business organizing ranch business while his brother Ed is leaning on the counter, gawking at the beautiful Clee and passing her cloth. He has his right arm up in the close-ups, but the left arm up in the wider shots. (00:04:55)
Continuity mistake: At the beginning, Belle dismounts from the horse and gets in front of Mammy Lou. Her hands are lowered in the wide angle but raised in the closer view. (00:04:00)