UFO Briefing Document: The Best Available Evidence

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

Roswell in the 21st Century

Flying Saucers and Science: A Scientist Investigates the Mysteries of UFOs

Encounter in Rendlesham Forest: The Inside Story of the World's Best-Documented UFO Incident

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

Fact, Fiction, and Flying Saucers: The Truth Behind the Misinformation, Distortion, and Derision by Debunkers, Government Agencies, and Conspiracy Conmen

The UFO Files: The Canadian Connection Exposed

Captured! The Betty and Barney Hill UFO Experience (60th Anniversary Edition): The True Story of the World's First Documented Alien Abduction

The Big Book of UFOs

Body Snatchers in the Desert: The Horrible Truth at the Heart of the Roswell Story

The Government UFO Files: The Conspiracy of Cover-Up

Real Aliens, Space Beings, and Creatures from Other Worlds

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

Alien Encounters

Dark Object: The World's Only Government-Documented UFO Crash

UFOs: Generals, Pilots and Government Officials Go On the Record

UFOs and the National Security State: Chronology of a Cover-up, 1941–1973

UFOs, ETs, and Alien Abductions: A Scientist Looks at the Evidence