Lost In Space:
Visit To A Hostile Planet
Original Broadcast: 13 September 1967
The Jupiter 2 is thrown back in time and lands on Earth in 1947, 50 years before they left. The ship is mistaken for a UFO, and the backwater town in which the ship lands prepares to fight off the invading 'Voltones'. Smith decides that the wrong Earth is better than no Earth and masquerades as a local. Will is captured. 
Judy and Penny, returning from a quick side trip to a local apple orchard, encounter a lasso wielding vigilante. Judy is captured and proceeds to argue with her captor about her humanity over apples. It's nice to see Judy get exasperated attempting to prove she's human to the local yokel. No cowering helpless victim is Judy Robinson!