The Extraterrestrial Answer Book: UFOs, Alien Abductions, and the Coming ET Presence

Hair of the Alien: DNA and Other Forensic Evidence of Alien Abductions

Real Visitors, Voices from Beyond, and Parallel Dimensions

UFOs and Government: A Historical Inquiry

Alien Encounters

Real Encounters, Different Dimensions and Otherworldy Beings

Strange Secrets: Real Government Files on the Unknown

Sight Unseen: Science, UFO Invisibility, and Transgenic Beings

A World of UFOs

The Big Book of UFOs

Project Beta: The Story of Paul Bennewitz, National Security, and the Creation of a Modern UFO Myth

Walking Through Walls and Other Impossibilities: The Hybrid Agenda

A Covert Agenda: The British Government's UFO Top Secrets Exposed

Real Aliens, Space Beings, and Creatures from Other Worlds

Close Encounters Of The Fourth Kind: Alien Abduction, UFOs, and the Conference at M.I.T.

UFOs: A History of Alien Activity from Sightings to Abductions to Global Threat: A History of Alien Activity from Sightings to Abductions to Global Threat

The UFO Files: The Canadian Connection Exposed

Casebook: Alien Implants

After the Martian Apocalypse: Extraterrestrial Artifacts and the Case for Mars Exploration