UFOs and Extraterrestrials

Our full catalog consists of 300+ Paperbacks and 80 Hardcovers.

All prices listed in this catalog are Book Tree Paperbacks unless stated otherwise.
Amazon, Barnes and Noble and other retailers may have slightly different pricing.
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The Aliens and the Scalpel

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The Aliens and the Scalpel

Author: Roger K. Leir

Contains new information on the subject of alien implant research and comes from a man who claims to have removed them from people for a number of years. Dr. Leir was a Doctor of Podiatric Medicine and was a trusted professional in the medical field for many years, which is what makes this book so interesting and credible. Includes case studies and two Appendixes which contain a large number of supporting documents and charts of scientific data.

ISBN 1585091065 • 248 pages • Price: $22.95

Camouflage Through Limited Disclosure

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Camouflage Through Limited Disclosure

Subtitle: Deconstructing a Cover-Up of the Extraterrestrial Presence

Author: Randy Koppang

According to the author, from the 1940’s to the present time the U.S. government has involved itself in the deepest levels of secrecy involving an alien presence on the Earth. This book delves into these deeper levels and reveals exactly how and why this secrecy has been maintained.

Two key researchers are also interviewed. Melinda Leslie claims that the military itself is involved with the abductions of important contactees with the purpose of gaining information from them about alien technology.

Second is Bill Uhouse, who claims to have spent an entire 38-year career at the very heart of an Unacknowledged Special Access Project. He has made unofficial public disclosures about advanced technology and the goal of perfecting functional flying discs.

Recommended to those looking for that “next level” of proof, in addition to skeptics who might change their minds. Something is going on, and this book will tell you in large part, exactly what that something is.

ISBN 9781585091102 • 159 pages • Price: $15.95

Quest for the Invisibles

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Quest for the Invisibles

Subtitle: The Discovery of Unseen Craft and Beings that Reside in the Invisible World All Around Us

Author: Nik Hayes

There exists an entire world around us that cannot be seen. The human eye sees only about 2.5% of the electromagnetic spectrum, so a number of people are exploring the invisible world around us. Trevor James Constable was a pioneer who began this work in the California desert in the 1950s, photographing what he considered to be UFO type objects and biological creatures traversing the skies in the infrared spectrum. Inspired by this work, Nik Hayes has taken things further by recording both in the infrared and ultraviolet realms, with video in addition to stills. The results of his first few years of work, conducted in the U.K., are revealed in this incredible book. Includes 50 photos.

ISBN 9781585091492 • 154 pages • Size: 6×9 • Price: $14.95

They Live in the Sky

Categories: Catalog, UFOs and Extraterrestrials|Tags: |

Subtitle: Invisible Incredible UFOs Around Us

Author: Trevor James Constable

Constable’s first full-length book reissued, which reveals otherwise hidden creatures and objects traversing our skies that were exposed with his groundbreaking infrared photo techniques. Also covered is a series of telepathic communications the author had developed with what was claimed to be an extraterrestrial intelligence. He abandoned this line of research in future work because much of the information received could not be fully verified, and he felt that delving into it more deeply could affect his other work on important scientific levels.

Therefore, this book is entirely unique – mapping out a serious scientific pursuit of hidden beings and objects in our atmosphere with the experience of strange, telepathic communications. This book also references the work of the main UFO researchers of the time including Major Donald Keyhoe, George Adamski, Harold Wilkins and George Van Tassel. Includes 36 original photos by Constable, accompanied by a chapter devoted entirely to their study.

ISBN 9781585091522 • 306 pages • Size: 5.5×8.5 • Price: $24.95

Also Available in Hardcover

Hidden History, Rain Engineering and UFO Reality

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Hidden History, Rain Engineering and UFO Reality

Subtitle:  The Best of Trevor James Constable

Author: Trevor James Constable

This book covers three interesting subject areas that span over a half-century in the life of Trevor James Constable. The hidden history area involves little-known military men and their amazing heroics. The rain engineering sections document the evolution of the technology along with the resulting proof of success the author experienced from around the world. If taken further, this technology could be a tremendous help to humanity.

Lastly, the reality of UFOs covers flying, biological creatures that were found to reside in the hidden ultraviolet spectrum of our skies. When witnessed, these beings can be mistaken for unknown craft that are thought to be piloted by humans or aliens rather than being alive in their own right and resident to the earth. The pioneering work of Trevor James Constable is still ahead of its time. The compelling scientific proof presented here leaves little doubt that we have much more to learn about ourselves and the world around us.

ISBN 9781585091485 • 260 pages • Size: 6×9 • Price: $22.95

Also Available in Hardcover

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