David J. Black was 55 when he was last seen in Toronto, Ontario, on November 2, 1982.

The case file preserves only a few clear facts and many unknowns. Because the disappearance predates modern electronic records and widespread surveillance, reconstructing his movements is especially difficult.

Anyone who knew David, remembers seeing him in Toronto around November 2, 1982, or has information about his movements or associations from that time is asked to come forward with what they can share.