Alan Douglas Visher, nearly 12, disappeared from a Sierra Club–led backcountry expedition in Kings Canyon National Park, Fresno County, California, on July 18, 1962. He was walking with his mother, sister, and two brothers near Dog Creek in the Tehipite Valley when he was last seen about 2:00 pm. The party numbered roughly 50 people and reached Simpson Meadow by evening, at which point Alan’s absence was discovered.

A multi-agency search followed, but no trace of Alan or his body was ever found. He was described as a White male between 4 feet 0 inches and 4 feet 10 inches tall, about 75 to 100 pounds, wearing a wide-brim straw hat, a brownish shirt, blue jeans, Red Wing boots, and carrying a backpack with a sweater and food. He was the son of Bay Area psychiatrist Dr. John Visher.

The disappearance remains unsolved. Anyone who remembers that 1962 expedition or has information about hiking in Tehipite Valley that day is asked to come forward.