An encyclopaedia of occultism : a compendium of information on the occult sciences, occult personalities, psychic science, magic, demonology, spiritism and mysticism (1920)
Spence, Lewis, 1874-1955 · London : George Routledge & sons, ltd. · leaf 438
The Brothers Ira & W* Davenport. These were the earliest exponents of manifestations, but theirmethods were later exposed as of the nature of trickery. … Cha? Foster and a Spirit One of the earliest spirit-photographs in existence, bearing but little resemblance to the later type of photographic materializations.
Occultism
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