Guidebooks to the Unexplained: Area 51
Looking Forward: Extraterrestrials and U.F.O.s
Guidebooks to the Unexplained: Men in Black
The Universe and Our Place in It: The Outer Planets
Science Fiction to Science Fact: Tractor Beams
Surviving the Impossible: Surviving an Alien Invasion
The SAGE Encyclopedia of Surveillance, Security, and Privacy
Paranormal Investigations: Aliens, UFOs, and Unexplained Encounters
The Big Questions: Life and the Universe: How It All Began and Are We Alone
Popular Fads and Crazes through American History
Mystery Hunters: Aliens and UFOs
Mystery Hunters: Atlantis and Other Lost Worlds
American Myths, Legends, and Tall Tales: An Encyclopedia of American Folklore
Historic Sites and Landmarks That Shaped America: From Acoma Pueblo to Ground Zero
True Tales of Terror: Creepy But True: Tales for the Campfire
Mysteries of History: Mystery of Area 51
Spectacular Space Science: Exploring Beyond the Solar System