Lucy Ruth Cummins is an author, illustrator, and art director of children's books. For Sleepy Sheepy and Sleepy Sheepy and the Sheepover she wrote the words. She is the author and illustrator of Our Pool and Stumpkin and the illustrator of several books, including Truman, written by Jean Reidy. Lucy is the mother of two sons who require tucking in and re-tucking in every night. She lives in Brooklyn, New York, with her little family. You can visit Lucy Ruth Cummins online at [...].

Pete Oswald is the #1 New York Times bestselling illustrator of The Sour Grape, The Smart Cookie, The Couch Potato, The Cool Bean, The Good Egg, and The Bad Seed, all written by Jory John. Pete's authorial debut, Hike, was shortlisted for the CILIP Kate Greenaway Medal. He is also the illustrator of Sleepy Sheepy, written by Lucy Ruth Cummins; Flat Cat, written by Tara Lazar; and the indie bestsellers The Attack of the Underwear Dragon, and The Return of the Underwear Dragon, written by Scott Rothman. In addition to making picture books, he works on numerous highly successful animated franchises as a character designer, concept artist, and production designer. He lives in Los Angeles with his wife and three sons. You can visit Pete Oswald online at [...] or follow him on Instagram [...]