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
Legal disputes over the Harry Potter series October 2007, Warner Bros. and Rowling sued Michigan-based publishing firm RDR Books to block the publication of a 400-page book version of the Harry Potter Lexicon, an online reference guide to her work. Rowling, who previously had a good relationship with Lexicon owner Steve Vander Ark, reiterated on her website that she plans to write a "Harry Potter" encyclopedia, and that the publication of a similar book before her own would hurt the proceeds of the official encyclopedia, which she plans to give to charity. A judge later barred publication of the book in any form until the case was