Wonderful rare 1st edition hardback book from Contemporary Books, written by Jacques Vallee who any UFOlogist or MUFON, Ancient Aliens fan will be well aware of.

Dust jacket shows some signs of minor wear, book is great but does have a faint smell of smoke.

"Dr. Vallee argues that the force that now appears in the form of UFOs and attendant manifestations has emerged into history many times, operating as a sort of contral mechanism that has altered and shaped human affairs, often profoundly....

"It could very well be the single most important influence on our history. And it is arguably more active now on a global scale than it has ever been before.

"This should tell us something about the importance of this moment in history, and should suggest to us that the time to come to a clear and correct understanding of the phenomenon is now.

"The longer we remain ignorant of it, the more we guarantee that it will retain its power over us. It is time to approach this phenomenon with all of the clarity of mind that it deserves. Dr. Vallee, it seems to me, has taken a dramatically important step in this direction."

—from the Foreword