Revealing mistake: Samuel Clemens (Mark Twain) spends a night in North Fork while the wheel of a stagecoach he is riding in is being repaired. Clemens is fishing at a lake and Mark McCain says, "You've caught a fish " Clemens tells the boy to reel in the fish. The boy jerks the rod and pulls the fish out of the water. The fish is obviously a fake which a stagehand had attached to the hook. The fish is motionless and is not even wet.
Continuity mistake: The placement of the money protruding from Masterson's bag changes completely between shots when he enters the bank. (00:01:45)
Audio problem: During the opening credits, the sound effect of the ringing telephone continues to play after Donna Reed has picked up the receiver and is talking on the phone. (00:00:03 - 00:00:30)