Kris claims that John Quincy Adams' Vice President was Daniel D. Tompkins. In fact, it was John C. Calhoun, while Daniel D. Tompkins had been Vice President under Adams' predecessor, James Monroe. The confusion arose because Adams was the 6th President whereas Tompkins was the 6th Vice President, some Presidents having had a different Vice President in each term, and one of the latter having served under 2 of the former.
Kris' license lists one of his reindeer as Donder (Dutch for thunder), yet whenever this name is spoken, the DVD captions (made 50 years after the film) show it as Donner (German translation). Both names are commonly used in popular culture.
The Macy's Parade is still very much in progress, and a marching band can be heard loudly playing in the background, as Doris enters her high-rise apartment building. Doris' apartment is many levels up, as Susan and Fred can be clearly seen looking downward to watch the parade below from his apartment which is located directly across from Doris', and therefore several minutes must pass between the time Doris enters the apartment building and when she arrives (presumably by elevator), at the entrance to her apartment. After we see Doris enter the apartment building, the very next shot we see of her is at the doorway of her apartment. As she enters her apartment, the parade band outside is still playing the same march, just as loudly as it had been when she had entered the apartment building, and it has not even skipped a beat.
When Kris is finishing up his examination, Dr. Sawyer is portrayed in a combination of three camera angles. As the angles change his hands go from raised above the desk to palms down on the desk to folded on the desk. The hands change positions continually throughout the scene.
While prosecutor Mara is making his final arguments to the
Judge, defense attorney Gailey is out in the hall presumably talking to the postmen. Gailey returns to the courtroom just as Mara finishes his statement. No judge would allow final arguments to proceed in the absence of the attorney for the opposing party.
When the state rested its case, Gailey could have asked for an immediate dismissal since the state did not meet its burden of proof. 1) The state did not produce expert witnesses to testify on Kris's mental state & 2) Kris was not proven to be a danger to himself or others.
When Kris leaves Alfred in the cafeteria and storms into Sawyer's office he has nothing in his hand. During his entire conversation with Sawyer his right hand is always free to gesture, but an umbrella magically appears for him to bop Sawyer on the head.
After Kris is accused of being mentally ill but before his hearing occurs, newspaper articles are shown on the screen. The headlines say that Kris will have a hearing, which is correct. But the articles say that the hearing has already occurred, and describe what happened in the courtroom. Yet that has not happened yet.
The woman tells Santa that all the department stores are out of the toy fire truck her son wants. Kris directs her to a store that has them. A few scenes later Mr. Shellhammer's secretary goes in to his office to talk to him. Behind her is a toy fire truck, perhaps the one they are supposedly out of.