The Reunion - S1-E14
Visible crew/equipment: After Miss Emily tells her sister to serve some more Recipe to Homer and Zeb, when it cuts to the Walton house the set's lighting equipment is visible at the left side of the screen. (00:15:45)
The Bicycle - S1-E23
Factual error: While Ann is on the Walton's swing telling Curtis that he deceived and lied to her, when Curtis gets back into his car, a modern vehicle is visible at the right side of the screen, which is inappropriate for the time period. (00:46:10)
Visible crew/equipment: When John-Boy falls off the ladder and breaks his wrist Zeb drives him to the doctor in the truck. During their drive we can see through the window behind them, and there's a crew member wearing a red shirt riding along in the back, as they drive past a parked 1970s station wagon. The camera and its operator are casting a shadow on Zeb as well. (00:18:25)
The Townie - S1-E24
Factual error: After John-Boy and Sarah's date at the double-feature, during the ride back home when John-Boy tells Sarah that there's nothing to makeup and he's not mad, through the windshield 1970s vehicles are parked directly ahead of John's pickup truck. (00:08:25)
The Scholar - S1-E22
Visible crew/equipment: When John drives off with Olivia and Esther while everyone shouts their goodbyes, just as we hear, "Have fun!" a director's chair is visible at the right side of the screen. (00:11:50)
Other mistake: When Uncle Cody hears the bad news on the radio about the banks remaining close, Olivia suddenly orders the children to clear the table when their plates are half full. Which wouldn't happen in a Depression with food being a precious commodity.
Continuity mistake: All of the children, even John and Olivia, seem to have reddish/auburn hair. Their natural hair colors are used in later seasons.
Revealing mistake: When John Boy goes out of the kitchen angrily, the view of the back is different than what it actually is. From the kitchen, there appears to be the mountain and trees, but when John Boy is outside leaving the kitchen, we know the barn is what we should see from the back door/window.
The Legend - S1-E11
Visible crew/equipment: After Tip arrives in his automobile John introduces him to the family. Then, when Tip explains that he didn't know the ages or genders of John's children and gets the candy, the reflections of a crew member and the moving boom mic are visible on the hood's chrome surface facing the camera, as well as on the windshield. (00:09:30)
Visible crew/equipment: After Jason tells John that he left word with Ike for the Sheriff, Elizabeth runs into the barn worried about Pete. Then Gino walks over to his T-mark (plastic type) on the dirt ground and a second T-mark (partially covered in dirt) is beside it. Soon, John-Boy walks over to that second T-mark as he glances down to presumably be certain he hits his mark. (00:32:55)
The Sinner - S1-E8
Continuity mistake: After Zeb and Matthew's visit to the Baldwin sisters, when the singing duo arrive at Godsey's store while everyone is watching, the man driving is wearing a different shirt than Zeb and is considerably younger. (00:35:05)
The Reunion - S1-E14
Audio problem: When John grabs Olivia from the kitchen sink to rejoin the family (over the washing machine snip) the children's laughter sounds more like a canned echo, or studio audience response.
The Carnival - S1-E3
Factual error: After John-Boy reads the scary bedtime story to Jim-Bob and Elizabeth, when Elizabeth is lying in bed she's holding her Raggedy Ann doll, and in the closeup we can see the doll's Knickerbocker tag. This episode takes place in 1933 (the Chicago World's Fair is mentioned at the end), and the Knickerbocker Toy Company created this doll in the late 1960s. (00:09:30)
Continuity mistake: At the end the narrator states that they never see or hear from A.J. again; however, in Season 4 'The Abdication' is about A.J. coming back in connection with a movie for which he wrote the screen play.
Factual error: When Mary Ellen brings G.W. into the woods to practice dancing together, she opens up a magazine and shows him a movie still of Fred Astaire and Ginger Rogers. The problem is the photo is a still from Fred and Ginger's dance in the movie "Swing Time" (at 00:28:00 within that movie) which premiered August 1936 (and was filmed that year), but this episode takes place more than two years prior, in early 1934. (00:59:20)
Continuity mistake: When Olivia asks John to go with them to Sunday services, in the wideshots Erin is sitting on the arm chair and Jim-Bob is rocking away in the rocking chair, but in the few shots facing John or Zeb we see the rocking chair and arm chair are empty. (00:04:10)
Visible crew/equipment: When the Baldwin sisters drive up to the Walton house with a gift, the reflections of location lighting and a few crew members are visible on their car's windows. (01:07:40)
Factual error: After Olivia realises she has polio, when John goes downstairs the radio is on and we hear an excerpt from President Roosevelt's fireside chat about upcoming Labor Day. The problem is this aired on the radio right before Labor Day in 1936, but Olivia contracts polio very early 1934. (00:22:35)
Continuity mistake: The Baldwin sisters buy Olivia a wooden wheelchair, and when Zeb brings it into the bedroom the camera tilts downward and we see Zeb's legs behind the chair. Later, after Mary Ellen and G.W. dance for Olivia it cuts to a closeup of the wheelchair, but it's actually the earlier shot because we still see Zeb's legs and he's not even in the room. (01:09:10 - 01:14:20)
Visible crew/equipment: While Mary Ellen walks home with G.W. after the Sunday services they're alone, and when G.W. tells her, "People learn how to dance," right at the start of the next shot we can see the blue shirt of a crew member at the lower left side of the screen. (00:08:30)
