Every book about Oak Island's treasure cites other books about Oak Island, which is exactly how pseudo-history works. When you trace the legend back to its origins, the primary sources simply aren't ...

Centuries-old clue: The Oak Island cipher stone, found about 90 feet underground in the early 1800s, allegedly pointed to buried riches. Lost and unverified: The stone vanished without early sketches ...

It may be less a clue than the reason the mystery never dies.