It's been almost 20 years since "Harry Potter and the Sorcerer's Stone" appeared on bookshelves, forever changing the lives of millions of children and adults.
Two decades is enough to make us Potterheads feel old, and it's not going away anytime soon, either. With "Harry Potter and the Cursed Child" out on Broadway and tons of themed events around the city, there's no sign of an end to the mania.
Here's how you can celebrate Harry Potter's birthday (July 31) and the first book's anniversary (Sept. 20):
Brush up on your magic knowledge for the O.W.L.s
East Harlem's New York Academy of Medicine, which includes a Hogwarts-esque library of 33,000 rare books dating to the 15th century, has released an online digital collection...the collection includes pages from books that show drawings and writings about the elusive dragon, magical unicorns, infamous mandrakes and plants used for medicinal (and magical) purposes. Log on at digitalcollections.nyam.org.