In 1976, M. Lamar Keene, a former medium in Florida and at Camp Chesterfield, confessed to defrauding the public in his book The Psychic Mafia "as told to" Allen Spragett.
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Camp Chesterfield was founded in 1886 and is the home of the Indiana Association of Spiritualists, located in Chesterfield, Indiana.
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In March 2002, The Skeptical Inquirer published a sting operation performed by former magician and prominent skeptical paranormal investigator, Joe Nickell.
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Among the best-known of the Spiritualist camps are Lily Dale Assembly in Lily Dale, New York, Camp Cassadaga in Cassadaga, Florida, On-I-Set-Wigwam Spiritualist Camp in Massachusetts, Camp Chesterfield in Indiana, Sunset Spiritualist Camp in Kansas, and Wonewoc Spiritualist Camp in Wisconsin.