A visit to the exhibition “War and Pieced: The Annette Gero Collection of Quilts from Military Fabrics” on view at the American Folk Art Museum through January 7, 2018. A look at “Generation Wealth,” a retrospective of the work of Lauren Greenfield at the International Center of Photography. And a profile of StreetMule, one of more than 350 members of the MTA’s Music Under New York Program.