UFO: Operation Trojan Horse

John Keel's radical reframing of the UFO question. First Abacus edition paperback, 1973. Keel argues that UFOs are not extraterrestrial spacecraft but manifestations of a long-standing non-human intelligence — a thesis that permanently altered the direction of paranormal research.

A genuinely scarce edition. The Abacus first paperback is harder to find than the later reprints and commands collector attention accordingly. Essential for any serious Keel collection.