Flying Home: Harlem Heros and Heroines, 1996, Glass Mosaic, by © Faith Ringgold, assisted by Tim Taft Designs
It consists of four panels next to each other on each platform right near the fare control area and is representations of various heros of Harlem floating through the air, the first set of photos below (before the 2nd photo of a plaque) are on the uptown platform, the second set are on the downtown platform.