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Harry Potter fans will soon get to try their hand at the important O.W.L (Ordinary Wizarding Level) exams that Harry, Ron and Hermione had to study for and pass during their fifth year. For "How to Pass Your O.W.L.s at Hogwarts: A Prep Course," The New York Academy of Medicine’s library in East Harlem has collected rare books and objects—some dating back to the 15th century—on topics relating to seven courses taught at the Hogwarts School of Witchcraft and Wizardry.

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