U. F. O.
Earthfiles - Linda Moulton Howe
Humanoid Sighting Reports & Journal of Humanoid Studies
The Magonia Database - A century of UFO landings (1868-1968)
EXOPOLITICS: Politics, Government, and Law in the Universe
THE PRUFOS POLICE UFO DATABASE
UFOseek, the UFO Paranormal Search Engine
Aliens Extraterrestrials Central
Paradigm Research Group Portal
UFOs and Extraterrestrials in Art History - Crystalinks
Crop Circles
Lucy Pringle Crop Circle Photography
Crop circle - New World Encyclopedia
Crop Circles - Their Meaning and Connections to Dreams
Crop Circles, Ancient Stone Sites, Megaliths, Geoglyphs, Pyramids