Jane Yolen is the author of more than 300 books, including children's classics such as Owl Moon and The Devi's Arithmetic, and adult novels such as Sister Light, Sister Dark. Her books and stories have won the Nebula Award, the Caldecott Medal, the National Jewish Book Award, and many other awards and accolades. She divides her time between Massachusetts and St. Andrews, Scotland.

Alida Massari is an Italian artist specializing in illustration for children. Born in Rome where she studied illustration at the European Institute of Design, she finds inspiration for her work from folk traditions and ancient art. She has illustrated many books, collaborating with Italian, English, German, and American publishers. She lives in Rome, Italy.