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