France Releases UFO Records
Not only are they declassified, they are available on an easy to use website!
Lifting the veil of secrecy is the easiest way to convince people that all the sightings have been hoaxes, hallucinations or comets (unless, of course, we really are covering up some crash-landed spacecraft).
The French site classifies the sightings into four groups; group “D” consists of the reports that remain unexplained. For those who don’t speak the language, Google translator should be enough to get the basic ideas.