Ivan T. Sanderson.

It is a shame that Sanderson, a biologist by profession, wrote only two books on UFOs. It is a greater shame that he is all but forgotten today. His first book, Uninvited Visitors (1967) remains among the most sophisticated analyses yet done on the possible nature of UFOs (Sanderson called them Unexplained Aerial Objects, or UAOs).

Too long to summarize here, Sanderson methodically asked, not what UAOs were, but what they could be. He developed a six page outline of the possibilities. Thus, they could be inanimate or animate. If inanimate, they might be natural, or artificial, each possibility with several subsets. If animate, they could also be natural or artificial. Natural forms might include life-forms indigenous to space, or to atmospheres, or to solid bodies. Artificial forms might be domesticated natural life-forms, genetically created life forms, or biochemically created life forms. And so on.

Sanderson at several points suggested the possibility that the "occupants" of UFOs might be artificial life forms. He was not dogmatic about this, and also entertained the idea that they might be an as-yet unknown life-form indigenous to Earth. Still, the concept of UFOs as a form of artificial intelligence is fertile enough that we might have expected some follow-up.

After all, it’s been 35 years.

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Invisible Residents – The Reality of Underwater UFOs

An almost forgotten gem of UFOlogy...Sanderson reminds us of the hard yet oft-forgotten fact of UFOlogy, which is, most UFOs seem inextricably connected with water - They are very frequently seen entering and leaving water, moving through or above water, and otherwise interacting with water. Sanderson explores all the implications of this, leading him to postulate that most UFOs are actually USOs - Unidentified Submerged Objects, and their pilots, these other intelligences (OINTS), may have evolved alongside of humanity but under the sea.
Amoung the volumes of cases discussed, Sanderson makes at least 9 references to police, particularly to cases in the US and Canada. He too recognised their importance as witnesses. Sanderson examines UFO hotspots around the world, including the infamous Bermuda Triangle and a hotspot off Australia, searching for patterns and clues, and concedes something irregular is taking place in our waters. Even in theory, he admits, deep within the oceans, within the earth, is the perfect place for an inpenetrable secret base.

Drawing from years of investigation and research, reknown Zoologist Sanderson makes a powerful case for the reality of underwater UFOs and underwater bases. Intelligently constructed, written elegantly and with character, Sanderson is a real joy to read. A highly recommended book.

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UFO Sighting by Zoologist Ivan T.Sanderson.

Shortly after 5:00 p.m., noted Zoologist Ivan T. Sanderson observed a disc- shaped UFO maneuvering over the Delaware Water Gap. The flat disc looped back and forth, appearing sometimes edge-on (as a very thin line), sometimes oval to circular. It vanished once, but quickly reappeared, and continued its rapid gyrations, finally speeding away to the west.

Section VI - Scientists and Engineers

Originally posted by karl 12
There's some interesting reading at the links below about 'forgotten' UFO researcher and zoologist Ivan T. Sanderson and his speculation about UFO origin and machine intelligence - Sanderson also conducted a lot of great research into the USO subject and, as well as having close connections to British Naval Intelligence and the O.S.S., he also experienced his own UFO sighting in New Jersey, 1958 - there's also some intriguing comments made in the articles about his work with John Keel, Major Donald Keyhoe and former CIA Director Roscoe Hillenkoetter and, as it mentions in the documentary, Sanderson thought 'UFOs seem inextricably connected with water'.

Documentary with background information on the USO research of Ivan Sanderson and his work with the British Intelligence Service and the OSS - also a good interview with Bill Chalker about a Water/UFO case in Australia:

Originally posted by spacevisitor

Thanks for the interesting video, too bad his files become “missing” as said at. 06:30

The archives arrived in Kalamazoo on Friday. Two very hard-working days of shelving and stacking later, punctuated by anomalies "parties" punctuated by sub-sandwiches and pizzas and large quantities of extravagant commentary, our eight person crew we at least got it all off the truck and inside. It's going to take a LOT of archival work, my friends, but it will be worth it---the unloading days themselves were some of the most fun I've had in a very long time.

I want to give you some extremely "early" assessment information. This stuff is EXTENSIVE. It nearly filled a 26-foot U-Haul truck. Secondly, it has survived the rigors of time and mice very well.

Society for the Investigation of The Unexplained: SITU.

Originally posted by Kandinsky

Anyway, here's two images of Sanderson's Archives...

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Ivan T. Sanderson's other book on UFOs, 'Uninvited Visitors'

Supported by his own research and documented reports, Ivan T Sanderson delves into the heart of UFO investigation. What could UFOs be? Where do they come from? When did they start coming? What would they want from us?

Even found in USAF libraries

Who knows of Ivan Sanderson? He was a writer, an UFOlogist as well as a paranormal researcher and biologist. One of his books I have is entitled: Uninvited Visitors. The story of how I got this book is amazing in itself. Every Air Force Base (AFB) has its own library. Did you know that?

Well they do. One day I went into the Pease AFB and asked if as a citizen I could take books out. The librarian told me YES, so I was looking for anything on UFOS. There were not many: one by Major Ruppelt and one by Major Keyhole and this book by Ivan Sanderson. Inside the cover of this hard copy book is a stamp, "PROPERTY OF US AIR FORCE LIBRARY CENTER AFL 2502".

So this book came out of Pease Air Force Base and I noticed that it was printed and copyrighted in 1967! So how long did they have it? What is also interesting is when I went to bring it back in a month or two, Pease was going to be transferred to a public airport and the library was closed down! So now I own the book!! But why this book? Why was this book out of so many interesting to the United States Air Force? As I read this book there was not much I could see so damning that the AFB wanted or needed it. Sure Ruppelts, or Keyholes but why Sanderson's?

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SITU,Sanderson, & USOs: a very small peek at the files

"Richard remarked that it would be interesting to see Sanderson's materials for his interest in USOs [undersea or underwater unidentified objects --- "Unidentified Submerged Objects" was I believe the USO intent]. Of course the files are a mess and I'm going back to West Virginia in about two days, so we can't really find out. But it turns out we can take a little peek. Sanderson, like with most of his topical files, created a three-ring notebook dedicated to the USO idea. In fact he had [at least] two of them, that I've found so far. At first glance [and that's all I can do now], it appears that these served as much of the factual basis for his book, Invisible Residents. I've posted a couple of the pages below of what appear to be his original loggings of the cases".

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Ivan T. Sanderson and John A. Keel: The Book They Never Wrote

In 1967, John Keel and Ivan Sanderson made a serious attempt to write a book together. The subject was UFOs; the year was notable for the unusual number of sightings, and public interest was at its height. A book by these two remarkable writers and researchers was bound to be a success..

Unfortunately, this promising idea was never to be. All that remains is this title page, a brief pitch, and a proposed table of contents. The book was to be “strictly reportorial… completely without faiths, beliefs, and theories.” The table of contents was chronological, from “The Beginning: Prior to 20,000 B.C.” to “The Breakthrough: A.D. 1966.”

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