Colin B. Bailey is Associate Director and Peter Jay Sharp Chief Curator at The Frick Collection, New York. Joseph J. Rishel is the Gisela and Dennis Alter Senior Curator of European Painting before 1900, and Senior Curator of the John G. Johnson Collection and the Rodin Museum at the Philadelphia Museum of Art. Mark Rosenthal is an independent curator based in New York. Susan Alyson Stein is Curator and Asher Ethan Miller is Research Associate, Department of Nineteenth-Century, Modern, and Contemporary Art at The Metropolitan Museum of Art, New York.