His best-known work, The Very Hungry Caterpillar, has been translated into 70 languages and sold over 55 million copies. In 2002, Eric and his wife, Barbara, cofounded The Eric Carle Museum of Picture Book Art ( in Amherst, Massachusetts, a 40,000-square-foot space dedicated to the celebration of picture books and picture book illustrations from around the world, underscoring the cultural, historical, and artistic significance of picture books and their art form. ).