Amy Krouse Rosenthal is a Chicago-based writer. She is the author of Little Pea, Little Hoot, Little Oink, and several other books for children and adults.
Tom Lichtenheld works as both an advertising art director and as a creator of of children's books. He has written and illustrated several books, including Everything I Know About Pirates. He has also collaborated with Amy Krouse Rosenthal on The OK Book and It's Not Fair! He lives in Geneva, Illinois.