Factual error: After Cindy admits that she needs to know why she was put up for adoption, when it cuts to a clip of Washington DC with the Washington Monument and Jefferson Memorial in the background, we also see vehicles not appropriate for 1945. (00:14:45)
Other mistake: When Jim-Bob comes home unexpectedly while Drew is over, this scene takes place in the boys' bedroom. In the interior shot, when Jim-Bob tells Drew to douse the light Drew gets up and turns off the light in the boys' bedroom, then it cuts to the exterior shot which specifically shows their window going dark as the light is being turned off by Drew. The problem is in this exterior shot we are seeing the light go out in John-Boy's bedroom (where Mary Ellen resides with the baby), not the boys' bedroom. (00:26:00)
The Hot Rod - S9-E12
Continuity mistake: While Miss Mamie is trapped, when Ike and Miss Emily find the special wall panel to control the door, the hidden door opens and the top of the door is plain with no molding, but when Ike leads the Baldwin sisters into the room, in the shot from within the room there is molding across the top of that door. (00:14:20 - 00:16:25)
The Hot Rod - S9-E12
Continuity mistake: When John-Boy, Jason, and Ben share the Recipe with Jim-Bob for a celebration, John-Boy sits on the bed directly below the picture of the biplane fighters (seen in three shots), but each time it cuts to the shots facing Jim-Bob we see in the mirror's reflection that it's Jason sitting below that picture, and John-Boy is further up on the bed. (00:15:05)
The Hot Rod - S9-E12
Continuity mistake: When Ike and the Baldwin sisters prepare to enter the "secret" room, in the shot from the foyer Miss Emily lights two new tall candles and they walk through the room's doorway. Then it cuts to inside the room as they all enter through the doorway, but both candles are now significantly shorter. (00:16:25)
The Hot Rod - S9-E12
Revealing mistake: When John-Boy, Mary Ellen, and Verdie are bringing Jody home from the hospital, during the drive in the two shots facing the front of the vehicle, the edge of the rear projection screen is visible at the left side of the screen. (00:45:25)
Visible crew/equipment: When Toni is setting the table Mary Ellen walks over to give her a hand, and the white tape mark is visible on the floor where Mary Ellen stands. It's most noticeable just as Jim-Bob lifts his leg over the bench, when he sits at the table. (00:13:50)
The Pearls - S9-E15
Visible crew/equipment: After Elizabeth informs Ike that Corabeth's sister, Orma Lee, is resting in the back room it cuts to the Walton family having dinner, and as Jason tells the others they should all stay out of it, the shadow of the boom mic is moving about on the white door. (00:09:55)
Factual error: When John Curtis walks out to the porch he's carrying a storybook, which John-Boy reads to him, and the year is late 1945 or early 1946. This over-sized Golden book is Richard Scarry's "Best Mother Goose Ever," and at its earliest it was published in 1970 with Scarry's illustrations of "Three Little Kittens" on the cover, and "Jack Be Nimble" on the back cover. (00:39:40)
Visible crew/equipment: After Ike goes off to help Jim-Bob and Jason with the antenna cable, just at the moment it cuts to John-Boy on the porch, at the start of the shot, on the right side of the screen we can see the shadow of someone's arm motioning to the young actor who is playing John Curtis, so he can open the screen door to step onto the porch at the correct time. (00:39:40)
Character mistake: When John-Boy reads the nursery rhyme "Simple Simon" to his nephew, John-Boy points to the colorful illustrations in this book and tells John Curtis, "See, that's Simple Simon, he's a bear." This is incorrect. In the illustrations, Simple Simon is a donkey, and it's the pieman who is a bear (he's wearing a chef's hat and apron). (00:40:50)
Continuity mistake: When Elizabeth and Corabeth are up late because they can't sleep, Corabeth prepares two glasses of milk and walks toward Elizabeth, but the amount of milk in both glasses increases significantly between shots. (00:34:50)
Continuity mistake: After Rose tells the Baldwin sisters that she needs "time to catch up," when it cuts to Stanley and Rose driving up to the home, in the wide shot the windshield wipers are pointed to the right, but in the closeup they're pointed to the left, then back to the right again. (00:18:55)
Visible crew/equipment: After Stanley drives Rose home, when she tells him that she does not want to marry him Rose gets out of the vehicle, and as the camera tracks closer, the reflection of the camera operator is visible in the small window beside Stanley. (00:20:15)
Visible crew/equipment: After Cindy brushes Virginia's hair it cuts to Mary Ellen and Erin serving Rose, and in the background we can see the green tape mark on the floor near Elizabeth, then when Elizabeth walks toward the table the yellow T-mark is also visible on the floor behind Ben. (00:37:55)
Continuity mistake: When Ike gives Corabeth the Geiger headset, in the wide shot she places it up to her head with the wire at her left ear, but in the next shot the wire is at her right ear. (00:27:50)
Revealing mistake: While Erin and Paul are driving to his home, when Paul tells Erin that he lives about half an hour up the road, from this moment until the end of this scene we can see the edge of the rear projection screen, at the left side of the screen. (00:31:50)
Factual error: After the shot of Erin and Paul driving to his home, which is about half an hour up the road, when it cuts to the exterior shot of the Assayer's office building, all the vehicles parked outside are from decades later. (00:32:10)
The Hostage - S9-E21
Continuity mistake: In this episode the hidden door to the "secret recipe room" is controlled by pressing the top right panel on the wall. But pressing that top panel should not open or close the door. In 9x12 "The Hot Rod," when they first discover the "ingenius" panel, it is only the panel second from the top that works, none of the other panels control the "secret" door when Ike and Miss Emily press them. (00:20:05)
The Hostage - S9-E21
Continuity mistake: After the explosion in the Recipe room, when Octavia opens the hidden door there is no molding at the top of the door in the shot from the foyer, but in the next shot from inside the "secret" room, as Octavia enters the room, there is molding along the top of that door. (00:20:45)
