S.W. Erdnase

S. W. Erdnase is a pseudonym used by the author of The Expert at the Card Table, a book detailing  sleight of hand, cheating and legerdemain using playing cards. Still considered essential reading for any card magician, the book, known also as either the Bible or, commonly, just Erdnase, has been in continual publication since 1902. Erdnase's true identity is one of the enduring mysteries of the magic community.