I love these White chassis buses used in the National Parks out West--I believe this one's for Yellowstone, and red ones were for Glacier NP.
The yellow one is from Yellowstone (which is clever, yellow for Yellowstone) and I believe Mt. Rainier had buses like this which were painted green.
Man that ‘71 Ford is looking kinda unloved. Missing door body molding, and the lower front fender looks like it’s wrapped up under the bumper. Sadly it’s probably not that old in that picture. Looks like there isn’t a creme ‘mid ‘70’s Ford wagon in the background. Probably ‘76-‘77ish.