Grandma Walton is wiping the kitchen table with a cloth. Her glasses are at the edge of the table beside a pot, out of her reach. A moment later they are in the middle of the table, where the motion of her hand knocks them off the table and they break.
(in the first season), when the Grandfather and John Walton, Sr. are talking to Sam about letting the carnival performers sneak aboard the train, Sam opens the clock to reset it. In the next shot, the clock to closed. It then opens again in another shot.
Jim Bob opens the window to touch the monkey but runs away. John Boy goes to investigate the children's room seeing with window open but the window is closed when he goes near the window. The monkey later leaves with his owner but the window is slightly open when it's supposed to be closed..
Pete Harris should have said Tommy Trimble was direct descendant of General Tom Thumb not Colonel.