The Maury Island Incident

More than likely a hoax.

The story surfaced from Ray Palmer (editor of Amazing Stories), regarding a man called Fred Crisman who claimed to have actual physical evidence of a flying saucer, July 31, 1947.

Palmer passed the story onto Kenneth Arnold, who was investigating UFO reports in the Northwest. Arnold interviewed Crisman an his associate Harold Dahl who claimed they were harbor patrolmen (their first lie).

Crisman reported that they had seen a doughnut-shaped craft dump piles of slag material on the beach of Maury Island in Puget Sound.

The next morning a mysterious man in black had threatened Dahl, who claimed the man said 'I know a great deal more about this experience of yours than you will want to believe.'.