Alvy Moore ('Sergeant O'Leary') and Hank Patterson ('Horse Dealer') would appear together regularly on the rural TV series "Green Acres" as 'Hank Kimball' and 'Fred Ziffel' respectively six years later.
Wagon Train tracker: The train is in central Nebraska on the Oregon Trail; reference is made to Fort Laramie, Wyoming coming up. Before that is "Fort Stoneman," entirely fictional; it might be a stand-in for Fort Kearny, at the Nebraska midpoint of the Oregon Trail.