Collected by Thea Westreich Wagner and Ethan Wagner

Published on the occasion of an exhibition celebrating the Wagners' promised gift of more than 850 works of art to the Whitney Museum of American Art, New York, and the Musaee national d'art moderne, Centre Pompidou, Paris, held at the Whitney Museum of American Art, November 20, 2015-March 6, 2016, and at the Centre Pompidou, June 16, 2016-January 2017.