Ethel Post-Parrish
American Spiritualist medium (died 1960)
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Ethel Post-Parrish (died 1960) was an American Spiritualist medium.

Biography
In 1932 Parrish founded Camp Silver Belle, a Spiritualist summer camp at Mountain Springs Hotel in Ephrata, Pennsylvania.[1] In her séances Parrish claimed to materialize her spirit guide, an Indian girl known as Silver Belle.[2]
In a séance at Ephrata, Pennsylvania, in 1953, Parrish materialized Silver Belle whilst sitting in a curtained cabinet. The pictures, claimed to be taken at 50 second intervals in infra-red light by photographer Jack Edwards, show Silver Belle growing from a cloud of "ectoplasm".[3]
Fraud
A related spiritualist camp known as Camp Chesterfield in Anderson, Indiana was managed by Mabel Riffle, a cousin of Parrish. The camp was exposed in 1960: infra red film had revealed that the materialized figures were all human and had entered the séance room through a side door.[4][5]
Camp Silver Belle was also practicing fraudulent mediumship, and had been exposed in various newspapers. Before exposures the camp took in up to a million dollars a year.[6]
The photographs taken by Jack Edwards of Silver Belle materializing were discovered to be a hoax. A photograph was taken of smoke and by a double exposure a cardboard figure was superimposed onto it. The woman standing outside the cabinet curtain was also an accomplice involved in the deception.[7]