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
Harry Potter audience. In December 2005, Rowling stated on her web site, "2006 will be the year when I write the final book in the "Harry Potter" series." Updates then followed in her online diary chronicling the progress of "Harry Potter and the Deathly Hallows", with the release date of 21 July 2007. The book itself was finished on 11 January 2007 in the Balmoral Hotel, Edinburgh, where she scrawled a message on the back of a bust of Hermes. It read: "J. K. Rowling finished writing "Harry Potter and the Deathly Hallows" in this room (552) on 11 January 2007." Rowling