The Etheric Crystal: The Third Tunnel (Transylvania)

Tarot of the Unexplained: A Deck of Cryptids, Ghosts, UFOs and Other Urban Oddities (78 Cards and 96-Page Full-Color Booklet)

Cosmic War: Interplanetary Warfare, Modern Physics, and Ancient Texts

Secret Journey to Planet Serpo: A True Story of Interplanetary Travel

UFOs and the National Security State: Chronology of a Coverup, 1941-1973

The Alien Agendas: A Speculative Analysis of Those Visiting Earth

Mystery of Egypt: The First Tunnel (Transylvanian)

The World's Greatest Mysteries: Investigating Our World's Most Fascinating Secrets And Unsolved Mysteries

The Edge of Reality: Two Scientists Evaluate What We Know of the UFO Phenomenon

Admiral Richard E. Byrd's Missing Diary: A Flight To The Land Beyond The North Pole Into The Hollow Earth