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
J. K. Rowling who have a close connection with the "Harry Potter" books. In 2008, Rowling agreed to publish the book with the proceeds going to Lumos. On 1 June 2010 (International Children's Day), Lumos launched an annual initiative – "Light a Birthday Candle for Lumos". In November 2013, Rowling handed over all earnings from the sale of "The Tales of Beedle the Bard", totalling nearly £19 million. In July 2012, Rowling was featured at the 2012 Summer Olympics opening ceremony in London, where she read a few lines from J. M. Barrie's "Peter Pan" as part of a tribute to Great Ormond