A member of British Library staff poses with a crystal ball for a picture at the “Harry Potter – A History of Magic” exhibition at the British Library, in London, Wednesday Oct. 18, 2017, 2017. The exhibition, to mark the 20th anniversary of the publication of Harry Potter and the Philosopher’s Stone, shows items from the British Library’s collection, and regional works from J.K Rowling and Bloomsbury’s collections and runs from Oct. 20. (AP Photo/Tim Ireland)