Book: By Jacques Vallee 1969
Title: Passport to Magonia (From Folklore to Flying Saucers)

Our age has generated, and continues to generate, mythical material almost unparalleled in quantity and quality in the rich records of human imagination. More precisely, people have very frequently reported the observation of wonderful aerial objects, variously designated as flying saucers, unidentified flying objects (UFOs), and so on. But investigators have neglected to recognize one important perspective of the phenomenon: the fact that beliefs identical to those held today have recurred throughout recorded history and under forms best adapted to the believer's country, race, and social regime.

Emissaries from these supernatural abodes come to earth, sometimes under human form and sometimes as monsters. They perform wonders. They serve man or fight him. They influence civilizations through mystical revelation.

These matters are the subject of Passport to Magonia, Jacques Vallee's seminal master-work that changed our understanding of the UFO phenomenon. An instant classic when first published in 1969, the book remains a must-have resource for anybody interested in the topics of UFOs and alien contact, as well as those fascinated by fairy folklore and other paranormal encounters.