Other mistake: Lucy Lawrence enters the stage depot in Bentonville and introduces herself as the new schoolteacher. A young boy exclaims, "School! Phooey!" Mrs. Lawrence says, "Well, school isn't all reading and writing and sums, Edgar." She had no way of knowing his name.
The Sheriff of Santa Rosa - S1-E23
Other mistake: Gene is chasing Ted Nolan, who is believed to have ties to a gang of cattle rustlers. Both men are on horseback. A long shot of Gene riding across a range is followed by a long shot of Ted riding across the same range so it appears Ted is chasing Gene instead of the other way around.
Melody Mesa - S2-E14
Other mistake: Gene is carrying a lantern in his left hand and walking through the tunnel of a mine. His shadow is on the wall to his left. (00:16:00)
Other mistake: Pat, riding a wagon pulled by two horses and headed to Rock River, slows to look at a sign. The sign, shown in close-up, says "ROCK RIVER, 5 MI." An arrow points to the right - but that is the direction Pat is coming from. The arrow should be pointing to the left.
Other mistake: Gene enters his ranch house and tells Pat, "I picked up a letter for you at the post office - special delivery." A special delivery letter would have been taken to the addressee upon receipt. It would not be left at the post office.
Other mistake: José accidentally drops a cake containing hidden explosives. Pat accidentally drops a cake containing hidden explosives. Both scenes use the same close-up footage of an explosion. (00:00:23 - 00:01:05)
Other mistake: As Gene enters the sheriff's office, he and the door cast a shadow on the painted backdrop. (00:19:30)
Talking Guns - S4-E6
Other mistake: Gene Autry is chasing Mack Healy and his outlaw gang, who are using Jim Decker's house and mine as a base of operations. Healy gives Decker a rifle and tells him they're being followed by a "claim jumper." Healy says there are seven bullets in the gun. When Autry rides into view, Decker begins shooting. He fires eight shots. (00:18:10)