There are 2 books in The Adventures of Cool Willy Green series.
The Adventures of Cool Willy Green series does not have a new book coming out soon. The latest book, How Willy Got His Hat (Book 2), was published in May 2012.
The first book in The Adventures of Cool Willy Green series, Cool Willy Green and Friends, was published in November 2011.
The Adventures of Cool Willy Green series primarily falls into the General Fiction genre.