The first image shows a very barren Frontierland with not many trees and other activities. This shot really looks as if the Mark Twain was on the mighty Mississippi River going through the wilderness. I believe this was taken in 1955 from one of the wagons in the deserts of Frontierland. I believe this was taken in the evening with the Twain parked as there is no one on board.
A nice 1960 shot of the Old Mill with the Matterhorn and Golden Horseshoe in the background. Of course this area is now undergoing its second major change in its lifetime.