- "The Untold History of the JFK Assassination" (1992)
- "Remote Viewing: The Secret History" (1997)
- "Nazi Crimes and the Vatican" (1997)
- "Assassination Diplomacy: Dirty Secrets of the CIA and U.S. Foreign Policy" (1998)
- "The Secret Origins of the UFO Myth" (1999)
- "Secret Science and the CIA: A History of America's Conspiracy Theologists" (1999)
- "The Nazi UFO Mythos" (2000)
- "The Secret Team: The CIA and Its Allies in Control of the United States and the World" (2001)
- "Secrets of the JFK Assassination: The Hidden Truth Behind the Warren Report" (2011)
- "The Vatican and the New World Order" (2012)
Articles:
- "The Vatican and the Third Reich" (1991)
- "CIA Documents Link Nazi War Criminals to OSS and NASA" (1991)
- "The Truth About UFOs" (1993)
- "Nazis and the United States: The History of an Ongoing Relationship" (1994)
- "The CIA's Secret Relationship with the Vatican" (1995)
- "Operation Paperclip: The Secret History of Nazi Science in America" (1996)
- "The Vatican's Role in the JFK Assassination" (1998)
- "The CIA and the Remote Viewing Program" (1999)
- "The Secrets of the Vatican's Secret Archives" (2000)
- "The Real History of the Illuminati" (2001)