Walt Disney chats with a young boy from the Hopi Tribe outside the Grand Canyon Diorama on the Disneyland Railroad. The photo was taken on the day the diorama opened, March 31, 1958. The grand opening festivities included a ceremony featuring members of the Hopi tribe from Arizona. Santa Fe Railroad Chairman, Fred Gurley, is standing behind Walt. Just days before, Disneyland Railroad Engine No. 3 was named in his honor. The boy is Little White Cloud. He was portraying the part of the Santa Fe mascot Chico.
Growing up in Los Angeles in the 70s/80s we visited Disneyland on a regular basis and often after school, before "Annual Passes".