Munro Leaf wrote and illustrated a large number of children's books. His most famous work is The Story of Ferdinand, which was first published in 1936 and has remained a bestseller ever since. Robert Lawson, Ludwig Bemelmans, and Theodor Seuss Geisel (commonly known as Dr Seuss) are just a few of the great illustrators who have worked on his books. Leaf also wrote the amusing non-fiction series How to Behave and Why, Etiquette Can Be Fun, and How To Talk Politely, which was reprinted after a pause. At the age of 71, Leaf died in 1976.