Continuity mistake: During the conversation between Jesse James and Charley Ford after James has killed Ed Miller and woke Charley in the middle of the night, Charley's right suspender is initially twisted, yet, in the next shot his suspender is flat against his body, and remains so for the rest of the sequence.
Continuity mistake: While Dick Liddle is talking to Robert Ford, Ford's hair is curled to his left, yet in one shot during the sequence, Ford's hair is straight, then goes back to being curled the rest of the sequence.