- Occult Significance of UFO`s by Douglas M. Baker, 1991-01-01
- The UFO Files: The Inside Story of Real-Life Sightings by David Clarke, 2009-10-01
- Case MJ-12: The True Story Behind the Government's UFO Conspiracies by Kevin D. Randle, 2002-12-01
- Soviet Ufo Files: Paranormal Encounters Behind The Iron Curtain by Paul Stonehill, 1998-02-01
- Encounter in the Pleiades: An Inside Look at Ufo's by Preston B. Nichols, Peter Moon, 1996-02
- UFOs and Aliens (Mysteries, Legends, and Unexplained Phenomena) by Preston Dennett, 2008-08
- ESP, Witches & UFO's: The Best of Hans Holzer, Book II (Fate Presents) (Bk.2) by Hans Holzer, 1995-10-08
- Night Siege: The Hudson Valley UFO Sightings by Dr J. Allen Hynek, Philip J. Imbrogno, et all 1998-05-08
- UFO's from Behind the Iron Curtain by Ion; Weverbergh, Julien Hobana, 1975
- UFO Religions
- UFO Diary by Satoshi Kitamura, 2007-10-28
- UFO Conspiracy From the Official Case Files of the World's Leading Nations by Jenny Randles, 1993
- Investigating UFOs & Aliens (Extreme Adventures!) (Fact Finders: Extreme Adventures!) by Paul Mason, 2010-01-01
- Haunted Places: The National Directory: Ghostly Abodes, Sacred Sites, UFO Landings and Other Supernatural Locations by Dennis William Hauck, 2002-08-27
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