Geronimo Stilton''Geronimo Stilton'' is an Italian children's book series. Although the series credits its title character as the author, the true author is Elisabetta Dami. On older novels, the copyright is issued to a pseudonym "Geronimo Stilton"; this was changed on newer books. The books are intended for readers in the 6–12-year-old age range.
Scholastic Corporation has published the English version of the series in the US since February 2004, and the books are published by Sweet Cherry Publishing in the UK.
The series has sold over 140 million copies worldwide, and with 249 editions it is one of the best-selling book series ever written. The books have been translated into 38 languages. Provided by Wikipedia