Harry Price (1881-1948) founded the National Laboratory of Psychical Research, whose archive is now held at Senate House Library, University of London, and contains some vintage gems relating to such famous paranormal activity as the Borley Rectory haunting (dubbed the most haunted house in England) and the light emitting psychic Pasquale Erto, known as the human rainbow.
Photographs in the archive have had an obvious influence on the contemporary works on show, whose makers all share a fascination with the supernatural, and work with the properties of photography that lend themselves to suggesting extraordinary phenomena.
If only we still saw photographs in the same way as our early 20th century counterparts, they would be frightening rather than arty.