All UFOs fall in the category of saucer shapes and flying disc, but there are numerous reports of other odd shaped UFOs that have been seen in the skies throughout history that are not typical and unexplainable.

An FBI secret memo entitled "Flying Saucer" reveals that flying saucers piloted by aliens did actually crash on Earth – in the small town of Roswell in the United States.

A memo has been released on a website that appears to confirm the landing of aliens in New Mexico just over sixty years ago. The FBI has already made countless documents available on a website called The Vault already. One such release seems to prove the Roswell landings actually occurred.

Innovation in Aeronautics: man-made flying saucers.

Essay: From Prisoners of Eternity.

UFOs and the Shaver Mystery.

UFOs and Jungian Archetypes.

UFOs and Time Distortions.

UFOs and Electromagnetic Effects.

UFOs and the Portuguese Air Force.