People: Jun. 3, 1966

The swamp gas might have been particularly thick around Manhattan that day. Knut Hammarskjöld, 44, director general of the International Air Transport Association, was conjuring up otherworldly aircraft at a meeting of the Aviation Space Writers Association. "I must make a confession," said Knut, whose Uncle Dag Hammarskjold was rather a mystic before him. "I believe in those Unidentified Flying Objects. Is it really unlikely that there exist civilizations outside our planet which are more developed, both technically and mentally, than we are? Are these space neighbors of ours getting more interested in...

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