Robert William Trapp was 56 when he was last heard from in Stockton, California, on December 15, 1965. He kept only intermittent contact with family but reliably sent a Christmas card every year; the final card is dated December 15, 1965. When no card arrived in 1966 the family assumed he might have forgotten, but by 1967 continued silence prompted concern.

Trapp is described as a Caucasian male, 5 feet 10 inches to 5 feet 11 inches, 160 to 180 pounds, with red hair, blue eyes and a scar on his forehead. Family searches produced little information and the Stockton Police Department lists the disappearance unsolved. There are no major developments reported since his last known contact.

If anyone has information about where Robert Trapp was in December 1965 or who he was with, please contact the Stockton Police Department.