Corrected entry: When Ralphie is copying down Pierre Andre's numbers to decode, the first number is "12." If you look at the decoder in the next scene when he is in the bathroom decoding the message, the numbers correspond to where they are in the alphabet. The first letter in the message is "B." Therefore, the first number should have been "2", not "12."
Corrected entry: While the family is driving home after picking out their tree and before the tire blowout, the kids and the wife are singing "Jingle Bells". On the driver's side of the car, a shadow of a microphone is seen bouncing up and down to the song, conducting the cast as they sing the song.
Corrected entry: The movie is supposed to be set in 1939-1940. However, since Christmas Day falls on a Sunday (his father reads the Sunday comics), it either had to be 1938 or 1949. To further confuse the issue, in neither year did the Bears and Packers play each other in December.
Corrected entry: Characters from The Wizard of Oz appear in the parade and at the department store. But that movie, which premiered in 1939, initially bombed in theaters and didn't become widely known to the public until re-releases in the late 1940s and TV showings starting in the 1950s. It seems unlikely the characters would have been featured.
Corrected entry: When the kids are putting gifts on Mrs. Shields' desk, the words "Merry Christmas" are written on the board behind her in red chalk. Later, when handing back the themes, the 'M' in Merry and the 'C' in Christmas are now written in white or yellow chalk, and the rest of the lettering is in a lighter red or orange chalk.
Corrected entry: When "saving" his family from Black Bart and his gang, Ralphie shoots the one climbing the rope, who then falls to the ground. When they show Black Bart standing behind the monkey bars, the guy that fell off the rope is in the background, supposedly dead. But, when Black Bart is talking to Ralphie, you can see the guy's breath because of the cold weather.