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
The Books of Magic began publishing a series of "Books of Magic" young adult novels under the Eos imprint, adapted from the comics series, by Carla Jablonski. Each novel featured cover art by Christopher Moeller. The first book is based on the original miniseries. The subsequent books are based on story arcs in the second series; except "The Children's Crusade", which is based on the Vertigo crossover event of the same name. A film version of "The Books of Magic" has been in development hell for many years. It was originally optioned "by Warners some years before the first Harry Potter book was published"