WNYC Host Leonard Lopate and Frick Curator Nathaniel Silver discuss the exhibition Piero della Francesca in America, on view at The Frick Collection through May 19. Piero della Francesca was a founding figure of the Italian Renaissance. The exhibition at the Frick brings together seven works, including six panels from the Sant’Agostino altarpiece — the largest number from this masterwork ever reassembled for display.