When Mark and Lucas take the train, it starts out as a Denver Western & Rio Grande. When it pulls out from North Fork, it becomes a Atchison Topeka & Santa Fe.
During the fight, one of the cowboys is thrown back into a supposedly solid building, but it wobbles when he hits it.
Micah and Lucas go into the saloon at night to tell Gus and Vic to leave North Fork. However, the street scenes through the window once they're inside show daylight.
In various episodes this season, Mark refers to Lou Mallory as "Miss Mallory" when he talks to her or as "Lou" when he is talking to his father privately. In this episode Mark calls her "Miss Lou."