<p>"Der Struwwelpeter" is regarded as the most successful German children's book ever and has been translated into many languages.<br>In 1844, the doctor Heinrich Hoffmann tried to find a picture book that he could give to his three-year-old son Carl for Christmas. Unfortunately (or fortunately for the reader) he found nothing that seemed appropriate for a child of Carl's age.<br>Instead, Hoffmann bought an empty notebook and decided to...