The New-York Historical Society is to unveil Pablo Picasso's iconic painted theater curtain, commissioned for Serge Diaghilev's Ballets Russes, Le Tricorne, in 1919. The masterpiece is the largest work by the Spanish born artist in America. It was donated by the Landmarks Conservancy to the New-York Historical Society and after considerable conservation will be on view to the public, later this spring. The Le Tricorne curtain was installed as a tapestry for 55 years at the Four Seasons Restaurant in the Mies van der Rohe designed, modernist, Seagram Building, in New York City.