Corrected entry: Mrs. Walker is introduced as Karen Walker a few times in the movie. When she signs her name on the letter to Kris Kringle she puts Doris, the actress' real name. Not once in the movie is she ever called Doris. Just Karen.
Corrected entry: In the final courtroom scene after all of the letters have been placed on the judge's desk, how was he able to sound the gavel if his bench is several layers deep in letters? You can hear the gavel sound again when he says "case dismissed" in the wide shot.
Correction: He could always bang the gavel on the front (vertical) part of the desk. This would be a plausible occurrence, unconventional, but not an unlikely choice under the circumstances.
Corrected entry: The Dutch Christmas song that is sung with the war orphan from Holland is in fact not a Christmas song but a Sinterklaas song. Sinterklaas is an entirely different holiday, celebrated on the 5th of December and has nothing to do with Christmas.
Correction: "Sinterklass" day, celebrated on Dec. 6 (not 5), is the Feast of St. Nicholas according to the Christian calendar. St. Nick is of course Santa Claus, and many countries celebrate that feast with gifts and parties.
Correction: Fred calls her Doris when they are having an argument about him quitting his job to represent Kris. She is always referred to as Mrs. Walker or Doris, never Karen. Furthermore, Maureen O'Hara's real name isn't even Doris, it's Maureen Fitzsimmons.