Quidditch Through the Ages to Find Them" have raised £17 million. In 2001, Rowling penned two companion books to the "Harry Potter series", "Quidditch Through the Ages" and "Fantastic Beasts and Where to Find Them", for British charity and offshoot of Live Aid, Comic Relief with all of her royalties going to the charity. As of July 2008, the books combined are estimated to have earned over $30 million for Comic Relief. The two books have since been made available in hardcover. Within the fictional world of "Harry Potter", "Quidditch Through the Ages" is written by Kennilworthy Whisp, a renowned Quidditch expert. In both
Harry Potter and the Philosopher's Stone 8.3 million in the US. An illustrated version of "Harry Potter and the Philosopher's Stone" was released on October 6, 2015, with illustrations by Jim Kay. The book carries over 100 illustrations and will be followed by illustrated versions of all seven books from the series by the same artist. In 1999, Rowling sold the film rights of the first four "Harry Potter" books to Warner Bros. for a reported £1 million ($1.65 million in 1999). Rowling demanded that the principal cast be kept strictly British but allowed for the casting of Irish actors such as the late Richard Harris