Beyond Roswell : The Alien Autopsy Film, Area 51, & the U.S. Government Coverup of UFOs

And Yet… They Fly!: The Most Comprehensive, Eyewitness Account on the Extraterrestrial Contacts of Billy Meier in 20 Years (by Guido Moosbrugger), Steelmark Publishing, 2001

Area 51: The Revealing Truth of UFOs, Secret Aircraft, Cover-Ups & Conspiracies, Visible Ink Press, 2019

Art, Life, and UFOs: A Memoir, Anomalist Books, 2009

At The Threshold: UFOs, Science And The New Age, Wild Flower Press, 1997

Alien Base: The Evidence for Extraterrestrial Colonization of Earth

Alien Discussions: Proceedings of the Abduction Study Conference Held at MIT, Cambridge, MA. North Cambridge Press, 1995

Alien Harvest : Further Evidence Linking Animal Mutilations and Human Abductions to Alien Life Forms, LMH Productions, 1993

Alien Identities: Ancient Insights Into Modern UFO Phenomena, Govardhan Hill, 1993

Alien Liason: The Ultimate Secret, Century,