Nancy Tillman is the author and illustrator of the New York Times best-selling picture book On the Night You Were Born and its companion journal, The Wonder of You: A Book for Celebrating Baby's First Year. Her other books include Wherever You Are: My Love Will Find You, The Spirit of Christmas, and Tumford the Terrible. A former advertising executive, Tillman now writes and illustrates full-time. She lives in Tualatin, Oregon.