MUMBAI: Harry Potter author J.K. Rowling is working on a Harry Potter encyclopedia. She will donate the royalties to charity, it is understood.
 
On her revamped website, Rowling addressed the question of a Harry Potter encyclopedia in a ‘frequently asked questions and rumours‘ section. "For a long time I have been promising an encyclopedia of Harry‘s world and I have started work on this now," said the 46-year-old author. Some of it forms the new content in Pottermore.
 
Pottermore, a free website allowing visitors to navigate the stories and discover new content not in the original books, is one of several Potter spin-offs following the completion of the seven-novel series.
 
The novels have sold more than 400 million copies worldwide and spawned a hit eight-movie film franchise that has helped turn Rowling into the world‘s most successful author.
 
It may be recalled that four years ago the British writer took an independent US publisher to Court to bring an end to its plans for a reference book on the world of the fictional boy wizard saying that it constituted a ‘rip-off‘ of her work.
 
Earlier this month, Rowling announced the title of her first book for adults would be The Casual Vacancy. It goes on sale on 27 September.