Nearly 6 million riders use the New York City subway every day. How do you make a map that helps all of them get to where they are going? The Great New York Subway Map, written and illustrated by Emiliano Ponzi and published by The Museum of Modern Art, in association with the New York Transit Museum, tells the fascinating story of the map's creation in 1972 by the great Italian designer Massimo Vignelli and his team, and introduces young readers to the idea of graphic design as a way to solve problems and shape our world.