Kari Lavelle is the author of We Move the World, illustrated by Nabi H. Ali, as well as the Butt or Face? series. She has always had a love of words: as a kid reading books, as a speech pathologist helping children communicate, and now as a writer creating stories. She lives in Austin, Texas with her human family and their dog, Dobby. Bryan Collier has illustrated more than thirty-five picture books, including the award-winning Trombone Shorty, Dave the Potter, and Knock Knock: My Father's Dream for Me, as well as City Shapes and Fifty Cents and a Dream, and has received four Caldecott Honors and six Coretta Scott King Awards. He recently illustrated Thurgood, which received four starred reviews and was a Washington Post and Bank Street Best Book of the Year. Bryan lives with his wife and children in Marlboro, New York.