Elmo's Trick-or-Treat Fun!: A Halloween Counting Book (Sesame Street)

Andrea Posner-Sanchez has worked as an editor in children’s publishing for more than 20 years, and is a prolific author of books for children. Her books include Always a Princess (Disney Princess), Dog Days (The Secret Life of Pets), and Meet Maui (Disney Moana). She lives in New York City with her husband and their daughter.

Joe Mathieu has illustrated countless books for children, including Big Frank’s Fire Truck, Sesame Street titles, books in the Cat in the Hat’s Learning Library series, and many more.