Factual error: While Jason is practicing piano at the Dew Drop he hears the horn playing outside, then when he walks out of the back door he sees Josh on the trumpet, and in the first shot of Josh we see a blue modern vehicle moving behind the bush, at the top left corner of the screen. (00:05:00)
Continuity mistake: When Verdi is sitting on Josh's bed, talking to him about being a man, the medium shot has her face tilted to the left. But in the immediately close-up, it's suddenly to the right as she finishes her comment.
Visible crew/equipment: While Mary Ellen is sitting on the couch reading Gone with the Wind during her break, when David walks in and sits down beside her, the shadow of the boom mic is moving around on the wall, at the right side of the screen. (00:16:05)
Continuity mistake: When the telephone rings Olivia walks over to answer it and the front door is open (we see the screen door), but when everyone rushes from the table and gathers around Olivia, the front door is now shut. (00:28:50)
Visible crew/equipment: When Jason and Verdie go back to the Unwin estate and this time are accompanied by Zeb, they are told that Miss Unwin is at the greenhouse, then just as Jason drives on ahead a few of the crew's modern-day trailers are visible at both the left side and the right side of the screen. (00:39:15)
The Ordeal - S6-E19
Visible crew/equipment: After Zeb tells the story about the egg, Ben and Jim-Bob start fooling around with the pulley, and when it cuts to Elizabeth and Aimee talking about the jamboree sale, lighting equipment is visible by the trees at the top, right side of the screen. (00:03:45)
The Ordeal - S6-E19
Visible crew/equipment: When Erin is put in charge, Olivia tells everyone to pitch in without complaining, then just as John says, "All right, let's go," the shadow of the boom mic is visible as it moves across the cabinet near the top, right side of the screen. (00:29:00)
The Return - S6-E20
Factual error: The year is 1940, and in the opening shot (as the name Richard Thomas appears on the screen) we have a view of Lower Manhattan as seen from the East River below the Brooklyn Bridge, but the problem is some of the buildings we see did not exist in 1940, such as One Chase Manhattan Plaza, which did not begin construction until 1957. (00:01:40)
The Return - S6-E20
Factual error: Right before the scene with John-Boy and Daisy at the restaurant, there's a shot of Times Square, and two of the marquees advertise the 1946 movie "The Jolson Story," and the 1946 movie "The Best Years of Our Lives," and also reads "Picture of the Year" which it won at the 1947 Academy Awards, but this episode takes place in 1940. (00:05:30)
The Return - S6-E20
Visible crew/equipment: When Hank gives John-Boy a lift home, he opens the rumble seat and places his bags inside. During the drive, a crew member's hat is moving around in the rumble seat area, at both the left and right sides of the screen, particularly the left side. (00:14:00)
The Return - S6-E20
Visible crew/equipment: After Hank gives John-Boy a lift home he walks quietly toward Olivia, and when Mary Ellen is shushed by Elizabeth and Jim-Bob, the reflection of the moving boom pole is on the vehicle's windshield. (00:16:30)
The Return - S6-E20
Visible crew/equipment: When John and his son visit Mr. Guthrie at his home, just as Verdie opens the door to the study, behind Mr. Guthrie the black T-mark is visible on the floor at the left side of the screen, where they will all stand shortly. (00:33:00)
The Return - S6-E20
Visible crew/equipment: With the family sitting around the table Olivia says grace, and just as she gets to the end of her prayer, the T-mark on the wood floor behind Erin is visible. This shot then dissolves into John-Boy sitting alone at the table, and as the camera turns toward the right more white tape marks are on the floor. (01:24:15)
Visible crew/equipment: When Erin and Elizabeth help Daisy unpack in their bedroom, just as John-Boy walks into the room, the lighting equipment is visible at the left side of the screen. (00:20:55)
Revealing mistake: While John-Boy is in his old bedroom with John Curtis, having a heart-to-heart conversation with the baby, in all the wideshots from behind the crib the edge of the set is visible at the right side of the screen. (00:21:20)
Other mistake: After John-Boy leaves, in the last scene we hear Jim-Bob ask about the magazines, but subtitles claim it is Ben who asks, then as we hear Jason answer the queston, the subtitles tell us it is Jim-Bob who answers. (00:47:00)
Visible crew/equipment: When John and Olivia join Zeb in the kitchen after he's been up all night reading Esther's journal, just as Zeb sits down at the table and explains why he read it, the shadow of the boom mic is moving at the right side of the screen. (00:41:40)