Herbert Tso Nelson, a 26-year-old Native American man and member of the Navajo Nation, was last seen January 1, 1979, in Dixon, California. He was described as between 5 feet 8 inches and 5 feet 10 inches tall, about 180 pounds, with a scar on his forehead and a mole on the right side of his nose. The Navajo Nation Police Department is overseeing the investigation, but few details about his movements before he vanished have been made public and the case remains unsolved.

Anyone who knew Herbert or has information about his whereabouts is asked to contact the authorities.