Revealing mistake: Joe and Eddie are in a corral in a big valley, taking turns trying to tame a horse known as Hammerhead. In the long shots, obviously using stunt doubles atop the horse, Hammerhead is bucking and running. The close-ups of Joe and Eddie show them only from the waist up and they are not moving forward. They are simply bouncing up and down. In addition, the close-ups show only blue sky and not the surrounding hills.
Bonanza (1959)
1 mistake in The Arrival of Eddie - chronological order
Starring: Lorne Greene, Michael Landon, Pernell Roberts, Dan Blocker
Ben Cartwright: You and your education.
Adam Cartwright: Education is progress! Now what have you got against it?
Ben Cartwright: I don't have anything against education - as long as it doesn't interfere with your thinking.
Mrs. Wharton and the Lesser Breeds - S10-E17
Trivia: A portion of the background music used during an outdoor scene in the town of Vallejo was later used as the theme song for "Little House On The Prairie."
Question: How could one of the three have been in prison during the murder at the barbershop? Did he have a twin?