Above Top Secret: The Worldwide U.F.O. Cover-Up

The Day After Roswell

Need to Know: UFOs, the Military, and Intelligence

Anonymous: A Former CIA Agent comes out of the Shadows to Brief the White House about UFOs

US Air Force Secret Space Program: Shifting Extraterrestrial Alliances & Space Force

Earth: An Alien Enterprise: The Shocking Truth Behind the Greatest Cover-Up in Human History

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

Beyond Top Secret

The US Navy's Secret Space Program and Nordic Extraterrestrial Alliance (Secret Space Programs) (Volume 2)

Insiders Reveal Secret Space Programs & Extraterrestrial Alliances (Volume 1)

Antarctica's Hidden History: Corporate Foundations of Secret Space Programs (Secret Space Programs Series)