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Associated Press
This image provided by Brown University shows the preface page of the "Mystery Book" from the John Carter Brown Library in Providence, R.I. Lucas Mason-Brown, a senior mathematics major at Brown University, helped crack a mysterious shorthand code developed and used by religious dissident Roger Williams in the 17th century. The handwritten code surrounds the printed text on the preface page. (AP Photo/John Carter Brown Library at Brown University)

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