Iona and Peter Opie were married in 1943 and worked together for nearly forty years, studying and writing about children's lore and literature until Peter's death in 1982. Among their collaborations is The Oxford Dictionary of Nursery Rhymes. Iona Opie lives in England. Maurice Sendak has created texts and illustrations for more than seventy books, which have sold millions of copies around the world. He has won numerous awards, including a Caldecott Medal for Where the Wild Things Are, and the Hans Christian Andersen Award for his body of work. He lives in New England.