The Happy Hollisters at Mystery Mountain Author:Jerry West, Helen S. Hamilton (illus.) While returning from New Mexico to the airport in their rented bus, the Hollister children stop to buy cowboy suits. Mr. Hollister discovers that the suits are made by the wife of an old friend. He contacts his friend and the whole family is invited to spend a few weeks on a desert ranch. The children meet new friends with a map to a cave on Mys... more »tery Mountain. Not only does the map disappear, but word is around that a rustler is taking sheep from the ranchers in the area. What happens to the children when they spend a night on the desert? Is there really a monster in Mystery Mountain? And who could the rustler be?« less