Award-winning author Jean Marzollo was the author of over 100 books, including the bestselling I Spy series; Help Me Learn Numbers 0-20; Help Me Learn Addition; Help Me Learn Subtraction; Pierre the Penguin; Soccer Sam; Happy Birthday, Martin Luther King; The Little Plant Doctor; In 1776; Mama Mama/Papa Papa; and I Am Water; as well as books for parents and teachers, such as The New Kindergarten. Walter Wick is the photographer of the international bestselling I Spy series as well as the author and photographer of the acclaimed Can You See What I See? series. He lives with his wife, Linda, in Miami Beach, Florida.