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Gods of air and darkness
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The space-gods revealed : a close look at the theories of Erich von Däniken
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Taxi from another planet : conversations with drivers about life in the universe
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Secrets of the lost races : new discoveries of advanced technology in ancient civilizations
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A history of the unexplained
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Alien visits : extraterrestrials, UFOs, and otherworldly encounters
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Investigating UFOs and aliens : investigating extraterrestrial visitors
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What do we know about alien abduction?
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Fall of civilizations : stories of greatness and decline
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The golden thread : a history of the western tradition. Volume I, The ancient world and Christendom
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American cosmic : UFOs, religion, technology
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Antiquity : the civilization of the ancient world
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The Visual dictionary of ancient civilizations
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Mirage Men : How The U.S. Government Created A Myth That Took Over The World
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Crash from outer space : unraveling the mystery of flying saucers, alien beings, and Roswell
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Ancient worlds : travel back in time and discover the first great civilizations
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The big book of mysteries
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Questions and answers about ancient history
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Great mysteries of the past : experts unravel fact and fallacy behind the headlines of history
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On the track of Bigfoot
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Unexplained! : 347 strange sightings, incredible occurrences, and puzzling physical phenomena
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UFOs and ufology : the first 50 years
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Forbidden science : journals, 1957-1969
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Knock on wood & other superstitions
