The power of imagination, group psychology, and the concept of "fantasy prone personalities," are explored by Bartholomew and Howard as they probe the history of how UFO stories are spread. The impact of "collective delusion" enhanced by the media can be dangerous, leaving great pain and tragedy in its wake. Included are detailed descriptions of the United States airship flap of 1896-97; the imaginary sightings of Thomas Edison's "electric star" of the late 1800s; Canada's phantom balloon wave of 1896-97; the New Zealand zeppelin scare of 1909; the British UFO panic of 1912-13; phantom German...