Revealing mistake: Jack Albertson's character is taking pictures of The Cartwrights and ranch hands. The video camera moves across the front of the prop camera as Albertson pushes and holds the button to take a picture. The shutter on the camera never opens and isn't open until he releases the button. In those days the shutter had to stay open an elongated time to enable the light to infiltrate the negative. People had to stay still during this time.
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.
Revealing mistake: They are trying to find where Jean Lafitte is hiding. Thinking that he is behind the drapes which cover a window, two bullets are fired into the drapery. The bullets should have shattered the window, but when they look behind them (and he is not there) the window and the frame are untouched.
Continuity mistake: Halfway through the show, Ben is talking to the commanding officer and captain of a fort. Ben leaves the room and closes the door but the door swings back to being almost full open. The commander and captain talk about going to the Ponderosa with a warrant to check for deserters. When they walk to the door, it is closed.
Revealing mistake: Near the end of the episode, Tracy Ledbetter is carrying a double barreled shotgun, trying to get her dogs back. There is the sound effect of a shotgun blast, then video of another blast with Hoss running inside the barn. She gets inside the barn and another shot goes off inside without her reloading. How did the third shot come from the gun? It only holds two shells.
Factual error: About half-way through the show, Joe Cartwright states 47 people received the Medal of Honor in the Civil War. In reality there were 1522 recipients of the medal in the Civil War. While an honor to receive, it wasn't held to quite the same level as in WWI and beyond.
Revealing mistake: The Cartwrights' second cousin shows up and sings a lot. His singing breaks glass all over town. 1/4 of the way through the episode, while at the ranch, Ben is about to serve tea or coffee while Huley is singing upstairs. As Ben goes to pour it into a cup, the pottery kettle shatters but no tea or coffee or water comes out of the pot, showing it was empty.