Continuity mistake: When Mr. McGuire is shot, he falls down, and Shannon's spoons spill out all over the ground. In an overhead shot, all the spoons are snatched up by bystanders, but then it cuts to a ground-level shot, and they're back on the ground, getting snatched up again.
Continuity mistake: After Shannon has been shot and Joseph takes her to her parents' house, he lays her on a chair in the living room. First she is facing the wall, in the next shot she is lying flat, then she is facing the opposite wall.
Continuity mistake: When Shannon falls off the horse into the water, near the end of the film, in shots of her immediately afterwards, her hair and clothes are surprisingly dry for someone who has just plunged top to toe into a river.
Other mistake: They are supposed to be in Oklahoma for the land run, but the terrain is nothing like that portion of Oklahoma! You can see the mountains in the distance.
Continuity mistake: Near the end of the movie when Shannon is comforting Joseph who has been injured after falling off his horse, her hand is on his face in one shot and then from the other angle it isn't, this problem continues throughout the scene.
Continuity mistake: When Joseph and Shannon go to see the Irish ward boss (Colm Meany) Shannon is squirted with blood from the boxing match. In the following shots she has the worst looking painted on blood splatter I have ever seen.