Someone Please Love Me - S5-E22
Continuity mistake: Charles walks down the staircase with a small trunk, suitcase, and a duffel bag. He finishes business from the man he bought the horses. When he walks out onto the porch, Charles is only carrying his duffel bag, and tosses it into his wagon. No other luggage is visible.
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: After the stagecoach crashes and Mary discovers that neither Marge nor Adam can move, she tells Adam that she's going to leave the canteen for him and Marge. Neither one can move. Neither one is going to get the canteen to the other.
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.
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 Nephews - S7-E14
Factual error: Royal Wilder promises to give his sons an Indian Head nickel if they are well behaved at Almanzo's/Laura's house. The Indian Head nickel was not minted until 1913 - 30 to 40 years later.
Factual error: Laura Ingalls Wilder was born in 1867. Ralph Waldo Emerson died in 1882, which means she was at the maximum 15-16 years old (and already married) in order to meet him IF he were to appear in 1882 which is not possible because: The problems with his memory had become embarrassing to Emerson, and he ceased his public appearances by 1879 (according to wikipedia).
Continuity mistake: When Laura pushes Mrs. Pierce, she lands in a pail of water on her buttocks, and her hair remains dry. The next shot is of Laura saying something, then in the very next shot we see Mrs. Pierce still sitting in the bucket, only now her hair is soaked. Since she landed on her behind, her hair should not have been soaked, and there was no time for anyone to pour water on her head between the shots.
Continuity mistake: The restaurant has "Caroline's" painted on the windows (except while operating as Mrs. Sullivan's). However, near the start of the episode, when the horses trot by in a nighttime exterior shot of the restaurant, the window still reads "Nellie's" (taken from earlier in the series). This same mistake has been seen in at least one other episode of season 8 as well.
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.
Factual error: Albert has a band-aid on his left hand. Band-aids weren't invented until 1920.
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.
Times Are Changing (1) - S9-E1
Character mistake: Almanzo says he hasn't seen his brother Royal in 10 years, but in fact he saw him not long ago as he looked after his 2 sons who were terrors, and at that time Royal didn't even have a daughter.
Suggested correction: Royal's wife was pregnant when he visited years before Laura had the baby.
What happened to Pearly Day? Almonzo's younger brother?
Not sure if this varied in the show, but in real life Pearly Day had six children and died in 1934 just a month prior to his 65th birthday.
Almanzo had 2 brothers. Royal and Jenny's dad, the one that was dying.
That may not work, unless Laura and Almonzo were not married yet at the time of Royal's first visit, but it is a good suggestion.
In the TV series, the episode that they were taking care of the boys was only six episodes before Laura found out she was pregnant, and Nellie's babies were still babies throughout that time so it wasn't that long. And Rose wasn't that big When they came to visit, so it was probably only 1 1/2-2 years of a time gap. Also, when Royal and Jenny came to visit, Almanzo introduced Royal to Laura as if they had never met before.
It was NOT years! Royal, his wife and 2 sons visited Almanzo in Season 7. His wife did announce she was pregnant in the end. However, when Royal comes back to visit with Jenny, at the beginning of Season 9. If Jenny is supposed to be the baby Royal's wife was pregnant with then she would have still been a year old or 2 at most. They do explain that his wife died, but what about those boys? They would have been early teens by then. Nothing is ever said about them or why they aren't with Royal.
But Laura says "glad to finally meet you Royal", when he came with Jenny. But she met him when he came with the boys.
Times Are Changing (2) - S9-E2
Factual error: This episode takes place around 1886/1887 and in the episode Royal dies. In real life, Royal didn't die until 1925.
Welcome To Olesonville - S9-E3
Continuity mistake: Mrs Olsen cleans up the old Hansen house to sell, however it was made the blind school years back and burned down, killing Mary's baby and Alice Garvey.
Revealing mistake: When Laura picks up Baby Rose from Thomas Stark, the blanket is flipped up and you can see a plastic doll's leg, then when she goes into the bedroom, she has the real baby.
Visible crew/equipment: As the train is pulling up you can see a car in the reflection in the train window and a man wearing a yellow shirt. Possibly a director or Michael Landon.
Home Again - S9-E16
Character mistake: Mrs. Oleson, talking to Willie, tells "Albert" to go clean up his room while Mr. and Mrs. Oleson, Willie, and Albert are talking in the Mercantile. (00:39:20)
Suggested correction: Mrs. Oleson isn't calling her son 'Albert'. She is talking to Albert as he's leaving the store and says "Well, it's nice to have you back, Albert" then she turns and looks at Willie and tells him to clean up his room. There is a slight pause between "it's nice to have you back" and "Albert" but she is not looking at Willie when she says Albert's name.
