This book completely belongs to both author and illustrator. Michael Rosen took a chant for children that enticed him, and set out to re-create it in words that would engage the youngest listeners. Then Helen Oxenbury took this light soufflé of a text and turned the book into an amazing family adventure—with characters and plot created solely by her.
Read more at Children’s Book-A-Day Almanac.
Image source Children’s Book-A-Day Almanac.