Read three free UFO Books
Right here on 4UFOs.com
Three free eBooks are available for site visitors of 4UFOs.com.
There are three different books on the Latest Sightings subDomain of 4UFOs.com: the World Atlas of UFOS - a resource and a half in my opinion, as it's a great book to look over to get a full grasp on the large scope of the UFO Phenomenon. Also available on that page is: The Great Beyond by Paul Halpern and and the exceptional Disclosure and UFO-related book "In Days to Come."
And here are three additional UFO-related books for your reading pleasure:
LIGHTS IN THE SKY
(a great book for helping to identify aerial phenomena)
THE BIG BOOK OF THE UNEXPLAINED
And even more free books that I found especially interesting but aren't necessarily UFO-related - more under the "paranormal" or "metaphysical" genre I suppose: