On the back of this book it says:

Annie M.G. Schmidt (1911-1995) loved Harrie Geelen's illustrations for her Pippelloo Bear (Golden Paintbrush 1995) and was more than happy to work with him again for this illustrated selection of her children's verse, All Animals. No one suspected that these magnificent color illustrations for "Beverley Beps", "Three Old Otters", "Sebastian Spider", "Porcupine Lullaby" and many others would be Harrie Geelen's last homage to this great writer.