The Carnival - S1-E3
Visible crew/equipment: Near the end, when the clowns are performing their act for the Waltons, the monkey's leash is visible as it makes it way across the tightrope, before jumping down.
The Waltons (1972)
1 visible crew/equipment mistake in The Carnival
Starring: Eric Scott, Jon Walmsley, Judy Norton, Mary Beth McDonough
Factual error: When Elizabeth asks Zeb how Vanessa can be happy, Zeb has his old catalog with a bunch of flower seed packets on his lap, and as they both hold up the packets, particularly Elizabeth, the modern Universal Product Codes are at the back of the packets. The UPC did not exist until many years later. (00:10:05)
The Reunion - S1-E14
Ike: How's it feel to be a working man?
John-Boy: Ike, Mama would skin me alive! Everyone knows those two ladies make bootleg whiskey.
Ike: But they don't know what they're doing. They're just following their papa's Recipe.
John-Boy: But sometimes they sell it!
Ike: Yeah, but they're just like two little girls by a roadside selling lemonade.
The Journey - S2-E1
Trivia: While Maggie MacKenzie and John-Boy are at the Mermaid Restaurant, when they both dance together Maggie envisions her long deceased husband, Michael MacKenzie, dancing with her instead of John-Boy. It is Earl Hamner Jr. who portrays Michael MacKenzie in this uncredited onscreen cameo during the scene (note teeth and facial features are identical).