All kinds of magical artifacts from the British Library, from the New-York Historical Society’s own collections, and from other institutions, all of which illustrated the various subjects studied by the students at Hogwarts: Potions, Charms, Care of Magical Creatures, Defense Against the Dark Arts, and so on. There’s also a wealth of information about the publication of the books, many documents from J.K. Rowling’s personal archive, and all kinds of beautiful artwork by the various illustrators who have taken on Harry Potter and his world.
There’s Still Time to See “Harry Potter – A History of Magic” at the New-York Historical Society
Source: See Harry Potter – A History of Magic – New-York Historical Society – NewsWhistle