There are 5 books in The Duchy of Grand Fenwick series.
The Duchy of Grand Fenwick series does not have a new book coming out soon. The latest book, The Mouse That Saved the West (Book 5), was published in April 1981.
The first book in The Duchy of Grand Fenwick series, The Mouse that Roared, was published in January 1955.
The Duchy of Grand Fenwick series primarily falls into the General Fiction genre.