Gunsmoke - Season 19 Episode 23 To Ride a Yeller Horse Get out of Dodge!
Overview: Joan Shepherd wants Anna May to marry Steven Rogers, not Newly or Orlo who is a farmer. Ana May wants to date Newly. Newly drops by to take Anna May for a ride and is told she won't be back for awhile. Orlo fights Newly over Anna May, Orlo hits his head on the wagon causing him to lose his memory.