Ph.D. Harvard University 1955.
Early Netherlandish, French and German Art.
Quattrocento art. Graphic Arts. History of Collecting. Jewish art issues.
The Italian Altarpiece. German Fifteenth Century Art.
The Art of Jan van Eyck, Attitudes to art in the Old Testament. Collecting
Old Master Drawings in America before World War I.
"Fit for a Royal Heart?: A French Renaissance
Relief." Metropolitan Museum Journal 38 (2003): 145-156.
Guggenheim Fellow, Senior NEH Fellow, Kress Fellow, Ford Fellow, CRB Fellow, Henry Fellow, Magdalen College Oxford, CASVA Fellow, Distinguished Visiting Professor George Washington University, Board of Drawing Center, Smith College Art Gallery, Wellesley College Art Museum, Conservation Committee of the Metropolitan Museum of Art, Israel Museum, Jewish Museum (Exhibitions Committee), Institute for Advanced Studies, Visiting Fellow.