Mac Barnett es un reconocido autor de libros infantiles. Sus libros se han traducido a más de 30 idiomas y han vendido más de dos millones de copias en todo el mundo. Sus álbumes ilustrados han merecido la medalla Caldecott dos veces: una en colaboración con John Klassen (Sam & Dave Dig a Hole, que también ganó el premio E.B. White Read Aloud) y otra por su libro Extra Yarn, el cual asimismo mereció el premio Boston Globe-Horn Book.

Shawn Harris comenzó a ilustrar portadas de álbumes de música en la década de 2000. Desde entonces ha ganado varios premios. El primer libro que ilustró, Her Right Foot, con Dave Eggers, fue aclamado por la crítica. Sus otras colaboraciones incluyen What Can a Citizen Do, también de Eggers, Everyone's Awake, de Colin Meloy, y A Polar Bear in the Snow de Mac Barnett. Su debut como autor, Have You Ever Seen a Flower?, fue bien recibido por The New York Times. Ahora vive en el norte de California, donde disfruta del surf, la música y jugar al ráquetbol.

Mac Barnett is a renowned author of children's books. His books have been translated into more than 30 languages and have sold more than two million copies worldwide. His picture albums have won the Caldecott Medal twice: once in collaboration with John Klassen (Sam & Dave Dig a Hole, which also won the E.B. White Read Aloud Award) and once for his book Extra Yarn, which also won the Boston Globe-Horn Book Award.

Shawn Harris began illustrating music album covers in the 2000s. Since then he has won several awards. The first book he illustrated, Her Right Foot, with Dave Eggers, was critically acclaimed. His other collaborations include Eggers' What Can a Citizen Do, Colin Meloy's Everyone's Awake, and Mac Barnett's A Polar Bear in the Snow. His debut as an author, Have You Ever Seen a Flower?, was well received by The New York Times. He now lives in Northern California, where he enjoys surfing, music, and playing racquetball.