His research appeared in four books: The Book of the Damned, New Lands, Lo!, and Wild Talents.In these four volumes Fort organized and commented on a wild host of phenomena: flying saucers seen in the sky before the invention of aircraft, flying wheels, strange noises in the sky; correlations between volcanic activity and atmospheric phenomena; falls of red snow; falls of frogs, fishes, worms, shells, jellies; finding of "thunderbolts"; discrepancies in the schedules of comets, sightings on Mars and the moon; infra-Mercurian planets; inexplicable footprints in snowfields; flat earth phenomena, disruptions of gravity; poltergeist phenomena; stigmata; surviving fossil animals; the Jersey devil; Kaspar Hauser; spontaneous combustion; and similar weird effects.While Charles Ford never actually explained the phenomena, beyond making vague hints of an organic universe and neo-Hegelianism, through the years his following has grown. At first his work was picked up by literary men such as Theodore Dreiser, Booth Tarkington, Clarence Darrow, Havelock Ellis, and Oliver Wendell Holmes. Later, "Fortean themes" influenced the development of science fiction, and today his work remains the great predecessor to all extraterrestrial speculations.