JANE YOLEN is one of North America's most successful and respected authors for children. Among her best-loved titles are Owl Moon, Devil's Arithmetic, How Do Dinosaurs Say Goodnight? and Briar Rose . Her list of awards includes the Caldecott Award, the World Fantasy Award, and two Christopher Medals. VLASTA VAN KAMPEN 's award-winning children's titles include: Beetle Bedlam, The Last Straw, ABC/123: The Canadian Alphabet and Counting Book, Orchestranimals , and Marigold's Wings . Vlasta has earned numerous honours, including the Governor General's Award, the Graphic Arts Illustrator Award, the 2001 IODE Award, and the Blue Spruce Award.Yolen, Jane is the author of 'Sad, Mad, Glad Hippos', published 2008 under ISBN 9781554700080 and ISBN 1554700086.