George Ella Lyon is the author of Trucks Roll!, Planes Fly!, and Boats Float!, cowritten with her son Benn. Among George Ella’s other books are the ALA Notable All the Water in the World, What Forest Knows, and Time to Fly. A former Kentucky Poet Laureate, she lives with her family in Lexington, Kentucky. Visit her online at GeorgeEllaLyon.com. Katherine Tillotson is the illustrator of several children’s books, including All Ears, All Eyes; All the Water in the World; Shoe Dog; and It’s Picture Day Today!. Ms. Tillotson lives in San Francisco with her husband. Visit her at KatherineTillotson.com.