John Elderfield, a Consultant at Gagosian Gallery, is Chief Curator Emeritus of Painting and Sculpture at The Museum of Modern Art, where he directed numerous celebrated exhibitions, among them Kurt Schwitters, Henri Matisse: A Retrospective, and De Kooning: A Retrospective, and the more specialized Manet and the Execution of Maximilian and Matisse: Radical Invention, 1913-1917. He is the recipient of Harkness and John Simon Guggenheim Fellowships; of the first Mitchell Prize for an outstanding publication on twentieth-century art; and has been a visiting scholar at the Getty Research Institute and the American Academy in Rome. Lauren Mahony organizes special exhibitions for Gagosian Gallery, New York, among them the recent Painted on 21st Street: Helen Frankenthaler from 1950 to 1959. In her previous post as Curatorial Assistant in the Department of Painting and Sculpture at The Museum of Modern Art, she worked on exhibitions and accompanying publications including Matisse: Radical Invention, 1913-1917 and De Kooning: A Retrospective.