Self - Author, Technology of the Gods, Self - Author, Lost Cities & Ancient Mysteries of the Southwest, Self - Author, Lost Cities of Atlantis, Ancient Europe & the Mediterranean, Self - Author, Antarctica and the Secret Space Program, Self, Self - Author: Technology of the Gods, Self - Author: Ancient Technology in Peru and Bolivia, Self - Author: Vimana: Flying Machines of the Ancients, Self - Author: The Anti-Gravity Files, Self - Author: Extraterrestrial Archaeology, Self - Author: Lost Cities and Ancient Mysteries of South America, Self - Author: The Tesla Papers, Self - Author: The Time Traveler Handbook, Self - Author: Lost Cities of Ancient Lemuria and the Pacific, Self - Author: The Crystal Skulls, Self - Technology of the Gods, Self - Author: Yetis, Sasquatch & Hairy Giants