Bertha frees Bill Shelley from the prison gang by faking a punctured tire. The wheel with the flat is left at the side of the road. In the following car chase, the wheel is initially missing from the car. Later the tire is clearly seen fixed to the rear of the car. When the car is being destroyed, the spare tire is gone again.
When Bertha first takes the feather at the party, the right strap of her dress is drooping. In the next shot, it's up on her shoulder.
When the gang hijacks the locomotive, it is pulling a tank car and box car. Later shots show only the tank car.
Rake is shot out the rear of the railroad president's private car, but Bertha watches it from the front of the locomotive, which should be out of sight of the car.
The back door of the railroad president's private car has a connecting diaphragm for passing between train cars, indicating that the back platform is an add-on.
The currency shown in the film is all modern, post 1960s, with modern banking money bands.
The boxcars rolling behind the characters in the 1930s, have dates stenciled on them indicating that they have been tested and repaired in the 1970s.
Shortly after the film begins, a very modern trackside railroad signal and control box are shown. These are almost certainly from around 1960 or later.
Many of the men's hairstyles in the film are more modern (early 70's) long, feathered, or Afro hair which was not the accurate cuts for men of the time.
At the beginning of the film, when the biplane lands on the grassy field, the sound of airplane wheels landing on a cement runway is clearly heard.
The caboose the gang robs is of a distinctive design used only by the Chicago, Milwaukee, St. Paul & Pacific Railroad, which did not run through Arkansas.
Rake is shown loading a Remington 1866 model 95 derringer with center-fire cartridges, but that gun was made to use only .41 short rim-fire cartridges.