Brilliant December sunshine makes the Mary Blair tile mural practically incandescent in this nice photo from 1969. I like the multicolored doors - exits from "America the Beautiful"? Notice the overcoats, it's colder than it looks.
Meanwhile, over in Frontierland, sturdy mules return from their journey through the spectacle of Nature's Wonderland. No fast thrills or extreme g-forces were necessary... just the gentle motion of the living animal beneath you, the trust in your brave guide, and the amazing tableaus created by Walt Disney's Imagineers were more than enough for 10 minutes of memorable fun.