Factual error: In the scenes where they show the flag it's a modern day 50 star flag.
Continuity mistake: The lead actor is standing on the back of a railway car as another train slowly pulls out. The following aerial shot still shows him there, but with no train or tracks to his right.
Factual error: The steam locomotives seen are dull faded gray. The railroads of the 1800's had great respect for the trains that brought their business. As such, their locomotives (even those in freight or yard duties) were painted in vibrant colors, with their bells, whistles, and other brass components highly polished. The replica engines at the Golden Spike National Historic Site, as well as various other preserved 1860's and 1870's vintage locomotives all give you a good idea of how steam engines appeared during the show's time. It wasn't until around the turn of the century that corporate greed had taken its toll on the trains' appearances.
