A rare proof copy of Harry Potter and the Philosopher's Stone that featured a typographical error in the name of author J.K. Rowling is being offered for auction and is expected to fetch up to $5,600. Auction house Ewbank's said the book, one of only 200 trial copies to be printed for reviewers by publisher Bloomsbury before the tome's official release in 1997, contains that typo on the title page ...
