Father Goose, His Book is a collection of nonsense poetry for children, written by L. Frank Baum and illustrated by W. W. Denslow. It was the great success in its genre at the turn of the twentieth century, selling more than 75,000 copies in its first few years in print. In bringing together Baum, Denslow, and publisher George M. Hill, the book martialed the forces that would produce The Wonderful Wizard of Oz in the following year, 1900.