Bachelor, Kenyon College, 1951. Degree (honorary), Kenyon College, 1984. Master of Arts, Columbia University, 1965.
Doctor of Philosophy, Columbia University, 1969. Certified in painting, Academie Julian, Paris, 1949.
Cultural affairs officer Foreign Service, Department State and United States Information Agency, 1951-1955. Instructor Wellesley College, 1964-1965, Bennett College, 1958-1960. Colgate University, 1957-1958.
Associate professor Commonwealth Post College, Long Island University, 1965-1966. Assistant professor department art and art history State University of New York, Binghamton, 1966-1969, associate professor, 1970-1976, chairman, 1973-1976. Professor art history and archaeology University Texas, Arlington, 1970-1993, chairman department art, 1976-1984, Ashbel Smith professor, from 1990.
Sam and Ayala Zachs professor art history Hebrew University, Jerusalem, 1978. Cosa excavations, American Academy in Rome, 1965-1973. Archaeological explorations in Tuscan Archipelago under auspices of America Academy in Rome, 1965-1975.
Director Rockland Foundation for Arts, Rockland County, New York, 1956-1957. Visiting professor American School Classical Studies, Athens, 1978.
With United States Army Air Force, 1944-1945. Honorary fellow American Academy in Rome (visiting professor 1985). Member Archaeol. Institute American, College Art Association.