Spiritualism (movement)
Other mediums

London-born Emma Hardinge Britten (1823–99) moved to the United States in 1855 and was active in spiritualist circles as a trance lecturer and organiser. She is best known as a chronicler of the movement's spread, especially in her 1884 Nineteenth Century Miracles: Spirits and Their Work in Every Country of the Earth, and her 1870 Modern American Spiritualism, a detailed account of claims and investigations of mediumship beginning with the earliest days of the movement.

William Stainton Moses (1839–92) was an Anglican clergyman who, in the period from 1872 to 1883, filled 24 notebooks with automatic writing, much of which was said to describe conditions in the spirit world. However, Frank Podmore was skeptical of his alleged ability to communicate with spirits and Joseph McCabe described Moses as a "deliberate impostor", suggesting his apports and all of his feats were the result of trickery.

Eusapia Palladino (1854–1918) was an Italian spiritualist medium from the slums of Naples who made a career touring Italy, France, Germany, Britain, the United States, Russia and Poland. Palladino was said by believers to perform spiritualist phenomena in the dark: levitating tables, producing apports, and materializing spirits. On investigation, all these things were found to be products of trickery.

The British medium William Eglinton (1857–1933) claimed to perform spiritualist phenomena such as movement of objects and materializations. All of his feats were exposed as tricks.

The Bangs Sisters, Mary "May" E. Bangs (1862–1917) and Elizabeth "Lizzie" Snow Bangs (1859–1920), were two spiritualist mediums based in Chicago, who made a career out of painting the dead or "spirit portraits".

Mina Crandon (1888–1941), a spiritualist medium in the 1920s, was known for producing an ectoplasm hand during her séances. The hand was later exposed as a trick when biologists found it to be made from a piece of carved animal liver. In 1934, the psychical researcher Walter Franklin Prince described the Crandon case as "the most ingenious, persistent, and fantastic complex of fraud in the history of psychic research."

The American voice medium Etta Wriedt (1859–1942) was exposed as a fraud by the physicist Kristian Birkeland when he discovered that the noises produced by her trumpet were caused by chemical explosions induced by potassium and water and in other cases by lycopodium powder.

Another well-known medium was the Scottish materialization medium Helen Duncan (1897–1956). In 1928 photographer Harvey Metcalfe attended a series of séances at Duncan's house and took flash photographs of Duncan and her alleged "materialization" spirits, including her spirit guide "Peggy". The photographs revealed the "spirits" to have been fraudulently produced, using dolls made from painted papier-mâché masks, draped in old sheets. Duncan was later tested by Harry Price at the National Laboratory of Psychical Research; photographs revealed Duncan's ectoplasm to be made from cheesecloth, rubber gloves, and cut-out heads from magazine covers.
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