Found Child - S7-E7
Factual error: The episode opens with Hoss discovering a wrecked wagon with three dead adults. He spots a Raggety Ann doll and realises that a child may be nearby. Raggety Ann dolls weren't invented until 1915, at least 48 years after the shows time frame.
Five Sundowns to Sunup - S7-E12
Other mistake: The Lassiter brothers have kidnapped a judge and a posse is searching for them. One of the men says they should quit for the day because "it's almost sundown." Judging by the shadows of the men, their horses and nearby trees, the time appears to be around 1 PM.
Continuity mistake: As Hoss and Joe walk down a trail, the sound of a roaring wind is heard and dust is blowing in the foreground but all the surrounding trees are motionless.
Continuity mistake: Hoss and Joe are tracking a cougar. In the stock footage shots of the cougar, the sky is a very deep blue and clear. In the scenes showing Hoss and Joe, the sky is a very pale blue with a few wispy clouds.
The Trouble with Jamie - S7-E25
Continuity mistake: Little Joe is pitching hay into the cattle pen. A load of hay lands on the head of a calf. In the long shot, the calf has no hay on its head. In the next close-up of Joe and the calf, the hay is back. It disappears again in the following long shot.
Continuity mistake: Near the start, the sarge orders the men to prepare to mount up, the soldiers walk over to the horses, and are ordered to mount. The soldier right behind the main characters starts to mount but has trouble and falls back down. Then they go to a wide angle shot and everyone is mounted.
The Unwritten Commandment - S7-E28
Factual error: Wayne Newton sang "Scarlet Ribbons." "Scarlet Ribbons" wasn't written until 1949. The TV show Bonanza was set in the 1860s.
Ride the Wind: Part 1 - S7-E17
Factual error: "Bonanza" is set in the 1860s and the Pony Express mail service operated from 1860 to 1861. In this episode, Curtis Wade and his partner set up a Pony Express office in Virginia City and begin hiring riders. Wade tells them that the job will not be easy, adding, "I won't be giving you sweet cakes and cotton candy." Cotton candy, originally called "Fairy Floss," was invented in 1897 by William Morrison and John Wharton.
