The Return of Golden Tom - S4-E25
Factual error: The Tedlers' kitchen is a 19th Century redress of a 20th Century set, but still includes a modern sink and faucet fixture where a water pump should be.
First to Thine Own Self - S2-E20
Factual error: Randy sings I'm So Lonesome I could Cry by Hank Williams, who didn't write it until 1949.
Factual error: At the start of the film, automatic crop irrigation can be seen in the background at the top of the screen. (00:01:55)
The Exiles - S1-E16
Factual error: At the end of the episode there's a shot of the steam locomotive pulling in to station at Sheridan WY. There is a very tall cyclone fence with razor wire on top in the distant background.