there was a whole raft of books and such from the 1960s that would have had an impact on these individuals. You had the highly-influential channeled Seth material from the mid-Sixties. You had a lot of people taking a lot of LSD and reporting what they found there. Heavy influence from Eastern religions and philosophy, books on a range of esoteric topics like Morning of the Magicians (1960), the “Ancient Astronauts” classic Chariots of the Gods? (1968), and a metric shit-ton of UFO narratives.
