Howard McWilliam is the illustrator of Dinosaur Christmas by Jerry Pallotta, I Need My Monster by Amanda Noll, When a Dragon Moves In by Jodi Moore, and the What If You Had...? series by Sandra Markle. He lives in Kingston Upon Thames, England, with his wife, Rebecca. For more information, go to howardmcwilliam.com. Sandra Markle is the author of more than 200 children's books, which have won numerous awards, including Boston Globe-Horn Book Honor Book, IRA/CBC Children's Choice, NSTA/CBC Outstanding Trade Books for Children, NCTE Orbis Pictus Recommended, and ALA Notable Books for Children. She lives in Florida.