Rolly Crump (previously) was one of the weirdest, most bohemian of the original group of Imagineers; when he was tasked with developing concepts for the oft-stalled and perennially beleaguered Disneyland Haunted Mansion, he came up with the Museum of the Weird, a guided walkthrough spook house filled with mystical illusions, and psychedelic, daemonic imagery.
Now, the Van Eaton Galleries (previously) have acquired a huge collection of Crump's art, including much of the Museum of the Weird concept art, and they're hosting an exhibition and auction for it.
Crump was into a lot of counterculture: modernist art (his mobiles became the kinetic sculpture in front of the 1964 World's Fair's it's a small world pavilion), drugs, jazz, and other delights — and there's a good selection of this work in the catalog as well.
The Life and Career of Disney Legend Rolly Crump [Van Eaton Galleries]