Bob Cassidy

Bob Cassidy is an American mentalist, speaker and author of several books widely regarded as classics in the field, including The Art of Mentalism , The Principia Mentalia , and The Artful Mentalism of Bob Cassidy . In 1978 Cassidy, and fellow mentalists Tony Raven, Scott Gordon, Mary Lynn, and Dian Buehlmeier, founded the Psychic Entertainers Association, which has since become mentalisms primary international professional society.

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Source: Wikipedia