Philip Coppens

Killing Kennedy

The Stone Puzzle of Rosslyn Chapel

The Cryptogram of Rennes-le-Chateau

The Lost Civilization Enigma

Land of the Gods

The The Ancient Alien Question, 10th Anniversary Edition

Secret Societies & Spirituality: Templars, Freemasons & The Path

2012: Mayan Prophecy (Unabridged)

The Ancient Alien Question: From UFOs to Extraterrestrial Visitations (Unabridged)

The Lost Civilization Enigma : A New Inquiry into the Existence of Ancient Cities, Cultures, and Peoples Who Pre-Date Recorded History

Alien Crash at Roswell: The UFO Truth Lost in Time

Ancient Alien Conspiracy: UFOs and the Dawn of Civilization