UFOs and Extraterrestrial Mysteries – Hieronimus & Co.

Not of this World: An Emerging Picture of the UFO Phenomenon

Witness to Roswell: Unmasking the 60-Year Coverup (with Don Schmitt), New Page Books, 2007

Witnessed! The True Story of the Brooklyn Bridge UFO Abductions, Pocket Books, 1996

Wonders in the Sky: Unexplained Aerial Objects from Antiquity to Modern Times (with Chris Aubeck), Tarcher, 2010

Visitors from the Time: The Secret of the UFOs

Walking Among Us: The Alien Plan to Control Humanity, Disinformation Books, 2015

Watchers: The Secret Design Behind Ufo Abduction, Bantam Books, 1990

We Discovered Alien Bases on the Moon: Documented with 125 NASA Photographs and Area Blowups

We Discovered Alien Bases on the Moon: Documented with 125 NASA Photographs and Area Blowups II, GAF International,1981/1997

West Virginia UFOs: Close Encounters in the Mountain State, Headline Books, 1995