A very early and hardcore scientific analysis of flying saucer technology from a member of the British Interplanetary Society.

Dedication page reads: “I dedicate this book to my wife Irene who shared the work throughout, and had to decipher my writing, and to Gary and David, that they will seek truth, as I have tried”

Printed in London in 1954 (the first American edition is more common, although still a rare find, was published the following year in New York.) The only other UK First Edition on the market is listed for $530 and in much worse condition.