Bachelor, Wellesley University, 1969. Master of Arts, Princeton University, 1972. Doctor of Philosophy, Princeton University, 1974.
Curator archaeological collection, John Hopkins University, Baltimore, 1974-1978; assistant professor art, George Washington University, Washington, 1978-1984; associate curator ancient art, Walters Art Gallery, Baltimore, 1984-1986; curator ancient art, Walters Art Gallery, Baltimore, since 1986. Member at large managing committee American School Classical Studies, Athens, Greece, since 1987, advisory board United States Center Lexicon Iconographicum Mythologiae Classicae, New Brunswick, New Jersey, 1986-1996. County member American Numismatic Society, since 1997.
Trustee Calvert School, Baltimore, since 1990. Member Archaeol. Institute American, College Art Association, Phi Beta Kappa Associates (board directors since 1993, secretary-treasurer since 1994), Phi Beta Kappa.