About the Author

Rudolf Wittkower was Durning-Lawrence Professor of the History of Art at the University of London, chairman of the department of art history and archaeology at Columbia University, Kress Professor at the National Gallery, Washington, and Slade Professor at Cambridge. Jennifer Montagu was for many years the curator of the Photographic Collection at the Warburg Institute, University of London. Joseph Connors is professor of art history and archaeology at Columbia University. John Pinto is Howard Crosby Butler Memorial Professor, department of art history and archaeology, Princeton University.