Here's a short list from ufomystic that I wrote in 2006. It's very incomplete, but it's a start. Hope this helps. To this I would also add Grand Illusions by Greg Little, Unconventional Flying Objects by Paul Hill, Operation Trojan Horse by John Keel and Visionaries, Mystics, and Contactees by Salvador Freixedo.
The New Inquisition by Robert Anton Wilson - 1987
A scathing rebuke of the culture of scientism, where scientists have become the unquestioned priests of reality. The first of his books that I read, which inspired me to read almost all of his others. An absolutely seminal thinker for the late 20th, and early 21st centuries.
The Rebirth of Pan by Jim Brandon - 1983
An incredibly original and insightful book that argues that the Earth itself gives birth to anomalies, UFOs, cryptoids, and ancient earthworks perhaps in some sort of non-temporal reaction to our present culture of rampant rationalism, if we choose to notice.
Cyberbiological Studies of the Imaginal Component in the UFO Contact Experience - Edited by Dennis Stillings - 1989
One of the longest book titles in Ufology. Not many remember Dennis Stillings, who apparently moved to Hawaii and got out of the anomalies biz many years ago, but while he was in it, collected such essays as “UFOs: Ultraterrestrial Agents Of Cultural Deconstruction”, “Ufology Considered As An Evolving System Of Paranoia” and “What Did Carl Jung Believe About Flying Saucers?” into this vitally important and now hard-to-find volume.
Messengers of Deception by Jacques Vallee - 1979
Vallee is one of the two or three greatest influences on people of my generation who are interested in UFOs and not stuck in the nuts-and-bolts school of the terminally Aristotelan. In this book, Vallee warned that UFO cults such as “The Two” (who later became Heaven’s Gate) were quietly becoming the new religions of the late 20th century and predicted that left unchecked, could become dangerous agents for social and political change. I wonder if the Aum Shin Rikyo people (Japanese cult that sarin-gassed the subways in Tokyo) had any space brother philosphies?
Angels and Aliens by Keith Thompson - 1991
In this little-remembered book, Thompson examined Ufology and UFO history as an evolving system of myth, with its own gods, creation stories, Fall from Grace, heroes and villians, etc. He was NOT calling the field a “myth,” but looking at it as a vitally human endeavour which closely followed the development of any culture’s stories about themselves, their origins and their raison d’etre.
The Conscious Universe by Dean Radin - 1997
I interviewed Dr. Radin after reading his book. He sat with me for almost 6 hours, patiently explaining his theories and views on time, causality, and the human mind’s influence on the physical world until he was sure I understood. When we were done, I could never look at “reality” in the same way again. Time is an artificial construction. The observer and the observed are one entity. Everything that has ever existed, is here now, and will ever exist are right here, right now-there is no difference. It’s one thing to say these things as new-age catchphrases, or excuses to throw at skeptics, but another to actually understand them on a level that goes beyond the simple concept. Radin did this for me with his book and his professor-like talk. You just can’t pay for this kind of education, but The Conscious Universe is a start. Stop saying “Well, what about quantum physics?” without really knowing what it represents and get this book.
Flying Saucer Occupants by Coral Lorenzen - 1966
An exhaustive catalogue of occupant cases that were being ignored by “serious” Ufologists at the time. Lorenzen and her husband Jim (founders of the Aerial Phenomena Research Organization) were trailblazers. It contained the first public account of the Antonio Villas-Boas story- the man who had sex with a beautiful female alien with white hair (on her head anyway) and snow-white skin. Where do I begin with the archetypal dissection of this one? It also examined occupant stories from South America which were (and still are) very different from the rest of the world.
Saucers of the Illuminati by Jim Keith - 1999
Take all conspiracy theories about UFOs, the government, secret societies and black-budget operations and blend well. I agreed with just about everything Keith said and wished I’d written it.
Breakthrough by Whitley Strieber - 1995
After Communion and Transformation, Strieber tied it all together in this moving account of his interaction with beings that he said are here to change us on a more fundamental level than we are capable of understanding just yet. I found currents of occult and alchemical thinking in the text, and I’m pretty sure that the author was aware of this component to his story. He deliberately mentioned the Russian philosopher and mystic G.I. Gurdjieff in the text and the influence of his thinking. Since I’m fairly convinced that something extra-human has been communicating with us for thousands of years, this was a refreshing take on the abduction phenomenon that has yet to sink into popular consciousness.