Harry Potter and the Deathly Hallows the publisher of all "Harry Potter" books in the United Kingdom, on 30 June 1997. It was released in the United States on 1 September 1998 by Scholastic—the American publisher of the books—as "Harry Potter and the Sorcerer's Stone", after Rowling had received US$105,000 for the American rights—an unprecedented amount for a children's book by a then-unknown author. The second book, "Harry Potter and the Chamber of Secrets" was originally published in the UK on 2 July 1998, and in the US on 2 June 1999. "Harry Potter and the Prisoner of Azkaban" was then published a year later in
Harry Potter 11 million units in the first twenty-four hours of release. The series has also gathered adult fans, leading to the release of two editions of each "Harry Potter" book, identical in text but with one edition's cover artwork aimed at children and the other aimed at adults. Besides meeting online through blogs, podcasts, and fansites, "Harry Potter" super-fans can also meet at "Harry Potter" symposia. The word "Muggle" has spread beyond its "Harry Potter" origins, becoming one of few pop culture words to land in the Oxford English Dictionary. The Harry Potter fandom has embraced podcasts as a regular, often