Factual error: Adam Kendall goes to Minneapolis to take the entrance exam to law school. He meets a fellow student who, after the first exam, accompanies him to the "EL (the elevated train) " Minneapolis never had an elevated train, only Chicago.
Come, Let Us Reason Together - S7-E13
Continuity mistake: By this episode, the restaurant windows have been displayed as Caroline's restaurant (replacing Nellie's). Although most scenes here correctly display Caroline's, one scene that starts from the outside with the horses riding by, the windows still display Nellie's (happens about 3 times this episode - the last time is shown just before Nellie and Percival are laughing on the bed).
The Raccoon - S1-E10
Character mistake: Charles takes a bowl of water to Jack. Jack steps away from the water, and doesn't drink. Then a couple of scenes later, when Caroline and Charles are in the barn, Mary comes out and says Laura is thirsty. Caroline starts crying and says that Dr. Baker says that it's a sign, but a sign of rabies is actually when the person or animal doesn't want water. At one point, it was called hydrophobia because of the fear of water. (00:38:26)
The Raccoon - S1-E10
Factual error: Laura and Caroline are playing a word association game about beverages and Laura says "orange juice, " which wasn't used by Americans until the 1920s. Any earlier than that, oranges were a luxury not available to farmers in Minnesota.
Christmas At Plum Creek - S1-E14
Character mistake: When Charles explains to Carrie about Christmas, he mentions 3 kings and 3 wise men. The bible refers to them as Magi or Wise Men and no clear evidence on whether there were just 3, or if they were even kings. Putting aside the number of visitors and what they were called, it's either kings or wise men, but not both.
He Loves Me, He Loves Me Not (2) - S6-E26
Other mistake: Charles has just brought Adam a letter to the site of the blind school rebuild. When Adam is told that his father died, he and Mary walk away from Charles. The terrain was very uneven. Being blind they realistically wouldn't be able to navigate it without stumbling.
A Christmas They Never Forgot - S8-E11
Continuity mistake: Every time they go outside during the blizzard, the keep talking about taking in wood, but yet the wood pile never changes throughout the whole show.
Revealing mistake: The guys get the pregnant girl and her kids 50 lbs pounds of flour. She goes outside, people are talking about her and she runs. You can see tire tracks in the dirt road.
Other mistake: They mention baby Rose is about a year old when baby boy Wilder is born and his headstone reads, born August 12, died August 24, 1889. Then when Rose is taken, Charles announces it's the year 1896 in the introduction. She would have to be almost seven years old and not a toddler when she was snatched.
Revealing mistake: In the episode where Baby Rose is sick with smallpox, you can see part of a modern disposable diaper under her cloth diaper when Doc Baker is checking for blisters.
Continuity mistake: When Mary falls down the hill, her glasses land in the grass flat against the ground. In later scenes, the glasses are standing up with the arms of the glasses stuck in the grass so that the sun can shine through them to light the grass on fire. (00:49:00 - 00:55:00)
Other mistake: When Charles takes a horse to chase after Carrie in the hot air balloon, they use a stunt double. He's not even dressed like Charles. Then a few minutes later, they use the exact same stunt man to jump on the hot air balloon. Just looks silly.
Revealing mistake: When Charles steals a horse to chase down the balloon with Carrie in it, you can see it's a stunt double. Charles is wearing his hat, beige shirt, and his knee-high boots with pants tucked in. The stuntman has a pink shirt, no hat, and long pants with shoes. Maybe even white socks.
Continuity mistake: During the final football game, the sun position changes from one side of the field (before the game starts) to the other side during most of the game then back to the first side for the last play of the game.
Quarantine - S3-E13
Visible crew/equipment: Around 9:15 when the family is sitting at the table talking, in the lower right corner the shadow of a camera person appears below Ma's chair. (00:09:14)
He Was Only Twelve (2) - S8-E22
Continuity mistake: After James is shot, Charles takes James away from the house because his family is getting upset. He builds an altar. A ladder is on the side where the shelter is. The ladder is gone in subsequent shots.
Factual error: When the man is holding onto the rope from the balloon, you can see modern tire tracks in the field.
Factual error: Aeroplane trails are in the sky throughout several episodes. This wouldn't have been possible in the time the show is set.
Factual error: On the hill to the right of the kids as they walk away, there appears to be a telephone tower on the hill.
