Toys And Techniques posted several wonderful scans from Christopher Hills' fantastically-titled "Rays From The Capstone: The story of the psychotronic generator of the pi-ray and the incredible coffer." It was published in 1976 by the University of the Trees press. According to Amazon, Hills has written several books, including "Secrets of the Life Force," with a terrific eye-in-the-pyramid cover illustration, and "Supersensonics: The Science of Radiational Paraphysics." I like the design and illustration of Rays From The Capstone. It looks like a mix of Whole Earth Review, 1980s 'zines, and the occult weirdness that New Falcon books used to publish. "Rays from the Capstone"
David Pescovitz is Boing Boing's co-editor/managing partner. He's also a research director at Institute for the Future. On Instagram, he's @pesco.