The Pyramids and the Pentagon: The Government’s Top Secret Pursuit of Mystical Relics, Ancient Astronauts, and Lost Civilizations, New Page Books, 2012

The Psychic Battlefield: A History of the Military-Occult Complex

The Poltergeist, Paraview Special Editions, 2004

The Oak Island Mystery: The Secret of the World’s Greatest Treasure Hunt

The Oak Island Mystery: The Secret of the World’s Greatest Treasure Hunt

The Field Guide To Ghosts and Other Apparitions (with Hilary Evans), Quill/HarperCollins, 2000

The Enigma of Wishing Rock, Publish America, 2004

The Alexandria Project: The Engineering of Psi-Volume Two, 1983/2001, Updated with new material, Backinprint.com

Talking With the Animals / Hampton Roads, 1998

STRANGE HIGHWAYS: A Guidebook to American Mysteries & The Unexplained! Exploring the Darker Side of America.