Conjuring Credits

The Origins of Wonder

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Spread Turnover Switch

The secret addition of a card above another in a hand-held spread, made during the action of flipping the card face down in the spread seems to have been independently developed by Tony Kardyro and Henry Christ. See The New Conjuror’s Magazine, Vol. 5 No. 7, Sep. 1949, p. 11, and Dai Vernon's Inner Secrets of Card Magic, 1959, p. 23.