Factual error: In the scene where Handratty hits the button to stop the press, suddenly individual checks come flying up from the press. This could not happen. On such a large press the checks would be printed several up on a large sheet of paper, to be cut down after printing is completed.
Factual error: In the street scene after Frank buys his airline uniform, he crosses the street in front of two buses. Behind one of the buses you can see a Federal Express truck. The movie is set in 1964; FedEx began operations in 1973; the FedEx logo on the truck was introduced in 1994.
Factual error: On the letter from Frank Jr. to Frank Sr. with the Atlanta return address, the stamp used had not yet been issued by the date of postmark (September 12, 1965). The stamp, the sheet version of the 5-cent "unshaven" George Washington (Scott Catalogue No. 1283), was not issued until February 22, 1966.
Continuity mistake: In the scene where Frank is pulling down the second suitcase of money from the top of the bed canopy while talking frantically to Brenda, the large portion of the suitcase is initially on top when the suitcase is put on the bed. But when the camera returns to another shot of the suitcase as Frank is opening it, the large portion of the suitcase is on the bottom.
Continuity mistake: In the scene where Frank Jr. gives car keys in a small gift box to his dad in a restaurant, his dad puts the car keys back into the small gift box and places it on the table in front of Frank. In the next few shots the gift box is sometimes completely closed and sometimes a little bit open (as if the keys got stuck in between).