Writer and illustrator Mark Pett lives in Mississippi with his wife, two children, and a very old dog named Catfish. Every February, the family draws five random digits from a hat and travels to whatever zip code it makes. He has illustrated several books and is the creator of the syndicated comic strips Mr. Lowe and Lucky Cow. Gary Rubinstein teaches high school math by day and is occasionally a comedian by night. In addition to co-authoring this book, he has written two guidebooks for new teachers. He lives in New York City with his wife, Erica, and his daughter, Sarah.