Lucille Recht Penner is the author of many nonfiction books for kids, including Dinosaur Babies and Monster Bugs in Random House's Step into Reading program. She lives in Tucson, Arizona. David Wenzel is an artist and illustrator for books for young readers and is best known for his visualization of J.R.R. Tolkien's The Hobbit in graphic-novel format. His other credits include Liberty!: How the Revolutionary War Began and Little David and the Giant. He lives in Connecticut with his wife, and they have two grown sons, both artists.