The International Guild of Advanced Sciences (IGAS), now known as the International Guild of Occult Sciences (IGOS), was an outgrowth of a collection of ancient occult guilds originating in the 1400s. From 1981 to 1993, it was known as the International Guild of Sorcery, then, from 1993 to 2010, it changed its name to the International Guild of Advanced Sciences until its most recent incarnation of International Guild of Occult Sciences, which operates to this day. IGOS is a nonprofit organization which gathered all manners of "secret and hidden knowledge". Its main purpose is to “Act as a teaching, research and manufacturing organization for all occult sciences, including: alien abductions, astral projection, astrology, demonic spirits, divination, exorcism, ghosts, haunted houses, healing, herbs, levitation, magic from all traditions, martial arts, meditation, mythology, PSI devices, psionic magic, psionics, psychic powers, psychic warfare, radionics, ritual magic, runes, shamanism, sorcery, UFOs, Voodoo, witchcraft." [UIA Global Civil Society Data Base description]. IGOS published books, created courses and produced catalogues where it members could purchase occult rituals, objects, and pseudoscientific devices to aid its members in their occult pursuits. We are offering a number of vintage books and catalogs from its incarnation as the International Guild of Advanced Sciences.
