Terry Deary, the British children's author, has written over 200 books, including the popular Horrible Histories series.
There are 25 books in the Horrid Henry series by Francesca Simon.
Terry Goodkind has had many books published including an eleven book series called "The sword of truth". He has also written "The law of nines" released in 2009.
Sir Terry Pratchett has sold over 85 million books in the UK. His books, including the Discworld series, have been highly popular and continue to be sought after by readers worldwide.
There were only 2 domesday books written
To date (August 2012) there are 39 main Discworld novels. Sir Terry Pratchett is currently working on another two Discworld novels on this date. See the related question below for more information.
There has not been an exact number set as of 2011 for how many Warriors books will be written.
Gordon Korman has written 136 books.
He as written Seven books so far
Kathy Mackel has written 12 books.
He has written around 50 kids books
20009 books