During the fight scene by the Candlewood tree, the horses of the Colonel's henchmen disappear after the Colonel draws his sword, the henchmen disappear and the turned over coals also disappear.
When Sam's father is in the bath, he begins telling about what happened to him in St Petersburg and Adam corrects him about helmets with the spike on top being worn by German officer. The stories for Bonanza's early seasons as sent around 1860, there was no such country as Germany until the Unification in 1871.