Factual error: The Joads take off for California. They pass a sign for Route 66, so they are already headed west on Route 66, between Tulsa and Oklahoma City. They then see a sign for Sallisaw City Limit. Sallisaw is in the eastern part of the state, well south of Route 66. They would never have seen a sign for Sallisaw after they reached Route 66 since they would have been far north or far west of Sallisaw. They pass Checotah, which is west of OKC. Then they get to OKC where Route 66 can be found. (00:36:52 - 00:37:15)
The Grapes of Wrath (1940)
1 factual error
Directed by: John Ford
Starring: Henry Fonda, John Carradine, Charley Grapewin, Jane Darwell
Genres: Drama
Plot hole: The deputies take down or compare the license plate number of the truck and say they'll be back with a warrant. A warrant for who? After Tom got clubbed, and they left Tavaris they had the truck stopped right there cleared them, and they left. So for no other reason but to close the movie would deputies just stumble upon a truck that's already been cleared proclaiming they would be back with a warrant. It makes no sense. (01:54:00)
Grandpa Joad: I smell spare ribs. Somebody's been eatin' spare ribs. How come I ain't got none?