Abstract Course prospectus, flyers, pamphlets, newsletters, correspondence, essays, articles, class notes and other material from The Prosperos, co-founded by Thane Walker, 1966-1980. Founded in Florida in 1956, then based in Los Angeles in the 1960s and early 1970s, the Prosperos espoused (principally through the writings of co-founder Walker) a program of transformative spiritual education that combined mysticism, psychology, astrology, as well as an openness to homosexuality, bisexuality and...