By Igor Witkowski 

This book is about the Third Reich's weapons of last resort, but it is a book unlike any other on the subject. This book is very well documented, and most of the sources have never before been presented in any publication.

By Nick Cook 

This riveting work of investigative reporting and history exposes classified government projects to build gravity-defying aircraft--which have an uncanny resemblance to flying saucers.

By Steven M. Greer, M.D. 

The Biggest Lie in History is about to be Shattered. UFOs are real. In late June of 1947, three extraterrestrial craft were downed outside Roswell Air Force Base.

By Joseph P. Farrell

Offers a range of exotic technologies the Nazis researched, and challenges to the conventional views of the end of World War Two, the Roswell incident, and the beginning of MAJIC-12, the government's alleged secret team of UFO investigators.

By Paul A. LaViolette Ph.D.

In Secrets of Antigravity Propulsion, physicist Paul LaViolette reveals the secret history of antigravity experimentation--from Nikola Tesla and T. Townsend Brown to the B-2 Advanced Technology Bomber. 

By Ethan Siegel, Forbes

By Esther Inglis-Arkell, Gizmodo

By Charles Platt, WIRED

By Tasha Shayne, Gaia