Just before Louella Parsons is seen in the radio studio, an exterior shot shows a building with the name NBC, but when Parsons is at the mic, it is marked ABC.
When the three travelers go to the Ortega property, the road is a fairly steep hill that curves to the left. When they leave, they drive down a road with an "S" curve that is on nearly flat ground.
When Dink first starts fixing the car in the rain, he is wearing a normal military hat, but when Rusty calls him to come back to talk to the driver, he is wearing a German helmet.
In Chicago, when Kit is chasing after Dink and Rusty, she spots them in front of a liquor store. There is an abrupt edit or jump cut when a taxi suddenly appears on the screen, the people on the sidewalk are different, and Rusty is closer to the door of the store again.
There is a mistaken conception that the man in the opening newsreel of the film is digging a hole. Coal is spread around on the ground and around the circular manhole that the man is standing in. A manhole cover can be seen off to the side behind him. Back in the days when coal was used to heat buildings, in some cases it was dumped outside and then shoveled into a coal bin in the basement of the building.
When Rusty and Dink leave Kit in the car and are walking down the dirt road, their shadows are directly behind them. One minute later, when they are walking back in the other direction, their shadows are fully to their right side.