Forward Alan Turing's Cryptic 'Josephus Problem' Postcard to be Auctioned

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Book Dealer: Antiquarian & Rare
Vandello Books
(206) 366-5234
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Heartwood Books and Art
3536 N. Federal Highway suite 201
Fort Lauderdale, FL 33308
(954) 565-8020
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Burning Tree Books
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East Sandwich, MA 02537
(508) 369-5430
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Greenwood Books
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Rochester, NY 14604
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