Richard Thomson is Watson Gordon Professor of Fine Art at the University of Edinburgh. Phillip Dennis Cate is Director Emeritus and Supervisor of Curatorial and Academic Activities at The Jane Voorhees Zimmerli Art Museum, Rutgers, The State University of New Jersey. Mary Weaver Chapin is Andrew W. Mellon Curatorial Fellow at The Art Institute of Chicago. Florence E. Coman is Assistant Curator of French painting at the National Gallery of Art.