Paint Your Wagon (1969)

Revealing mistake: In the scene where the town is collapsing, there is a shot of Ben in the bathtub falling into the river, if you look closely, you can see the strings that are keeping the tub steady and upright.

Mrs. Fenty: You should read the Bible, Mr. Rumson.
Ben Rumson: I have read the Bible, Mrs. Fenty.
Mrs. Fenty: Didn't that cure your appetite for drinking?
Ben Rumson: No, but it sure killed my appetite for readin'.