When Holly is about to ride Snow Drop over the bridge, the horse's driving harness is still on while Holly is supposed to be sitting on the horse in a saddle. In the next scene with Snow Drop, the harness is off and has full western tack and saddle on.
Holly arrives on a train pulled by a 'British' steam engine.
Once on the station, another locomotive is visible, an American one this time, but it is obviously damaged.