Jory John is a New York Times bestselling author and two-time E. B. White Read-Aloud Honor recipient. Jory's work includes the award-winning Goodnight Already! series; the bestselling Terrible Two series; the recent picture books Penguin Problems and Quit Calling Me a Monster!; and the national bestseller All My Friends Are Dead, among many other books. He lives in Oregon. You can visit him online at www.joryjohn.com. Pete Oswald is a painter, illustrator, and filmmaker. He is the illustrator of the first three books in the Did You Know? series. Pete worked as a character designer and concept artist on the popular films Madagascar: Escape 2 Africa, Cloudy with a Chance of Meatballs, and Hotel Transylvania. His short film The Story of Walls earned him an Annie Award nomination. He was the production designer of The Angry Birds Movie. Pete lives in Santa Monica, California, with his wife and two sons. You can visit him online at peteoswald.tumblr.com.