John Calley (Calley, John)

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  via
  The Da Vinci Code Illustrated Screenplay: Behind the Scenes of the Major Motion Picture
  by Akiva Goldsman, Ron Howard, Dan Brown, Brian Grazer, John Calley
  Hardcover, Doubleday Publishing, ISBN 0385519117 (0-385-51911-7)
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  The Da Vinci Code Illustrated Screenplay: Behind the Scenes of the Major Motion Picture
  by Dan Brown, Akiva Goldsman, Ron Howard, John Calley, Brian Grazer
  Softcover, Broadway Books, ISBN 0767926021 (0-7679-2602-1)