For the last ten years city librarian Katherine 'Luna Park' Lorimer has been cataloging the art to be found on NYC streets. She quickly learned that for those that pay attention, the street can provide as much of an arts education as a museum. Ever since the City banished graffiti from the subway trains, it's streets have developed into a vast playground for a complex culture, made up of distinct communities, each with their own hierarchies, values and sets of rules.