Alien Base is the culmination of nearly 40 years’ research that for the 1st time offers an in-depth understanding of the diverse range of UFO phenomena. New evidence from Good’s files includes:  An impressive collection of photographs of alien craft; the 1st convincing photographs of aliens; retrievals of alien craft & bodies predating Roswell; cases involving repairs carried out to grounded craft; visits to alien bases on Earth; new stories of worldwide encounters with aliens (1920-97); Unidentified submarine objects reported by naval observers; remarkable new cases involving space-time distortion; and sensational new encounters reported by pilots. Written by a researcher recognized internationally for his unsensational objectivity about this complex multidisciplinary subject, Alien Base provides insight into the extra terrestrial and UFO phenomenon. With colour and black and white photographs.