A Hundred Yards over the Rim - S2-E23
Factual error: Although set in 1847, Christian Horn is carrying a rifle made in 1884.
Of Late I Think of Cliffordville - S4-E14
Factual error: Even though its supposed to be 1910, the banker's daughter plays a 1960's Steinway piano.
Factual error: At the end of the episode, Major General George Harper looks out the window, puzzled. As he looks out the window, we see a palm tree in front of the building that is facing the window. Reims, France, is in northern France, where it is too cold to support that kind of tree. (00:23:00)
Factual error: Captain Riker and Lt. Fitzgerald are wearing their insignia, which is incorrect. Officers serving in front line units did not wear their insignia because it identified them as high priority targets for Japanese snipers.
Factual error: The premise for this episode has a major flaw: the only things that could shift the Earth's orbit significantly are a near passage of or a collision with an astronomical body of sufficient size to alter the course of a body weighing 6.6 sextillion tons - the mass of the Earth. Either event would cause sufficient disturbances that cities would probably not be left standing, nor would there be anyone left to stay in or flee from them. While the events of the episode are mostly a dream, the revelation is that the earth is actually moving away from the sun, not towards it, so the mistake applies regardless.
Suggested correction: The Earth's orbit moves outward and away from the Sun about 1.5cm every year. Eventually though the Earth will lose orbital energy and spiral into the Sun. Norma and the rest of Earth exist in a time when the planet has moved away from the Sun.
Factual error: The Southern Pacific train that almost hits Nan's car did not serve the part of the US she was supposed to be in.
King Nine Will Not Return - S2-E1
Factual error: Military personnel in the desert would not be wearing dark uniforms but a light khaki tan.
King Nine Will Not Return - S2-E1
Factual error: The shape of the B-25's top gun turret is completely different from the turrets actually used on these bombers.
Factual error: In his opening narration, Rod Serling says that he is quoting Shakespeare's play Richard the Third. His quotation is actually from Richard the Second, also written by William Shakespeare.
Factual error: Caswell acts surprised at the sight of the lighter, but lighters were around in his time.
Suggested correction: The modern lighter, which use ferrocerium to create a spark, was developed in 1903. Caswell was from 1880. This would have been different then anything he would have seen.
Long Live Walter Jameson - S1-E24
Factual error: When Walter is reading the diary of the Civil War soldier at the beginning of the program, he reads an entry from "Tuesday, September 11, 1864." Tuesday, September 11, 1864 was a Sunday.