Factual error: When the riders are watching the wagon train, in the background you can see a communication tower with conical speakers.
Factual error: Based on the lottery poster, the movie is set in 1925. During the scenes in Tampico, numerous newer cars (closer to the 1948 filming) are present in the background.
Factual error: The movie takes place in 1860, yet Ripper wields an 1862 police model Colt revolver.