Byzantium, a world civilization - Laiou, Angeliki E; Maguire, Henry, 1943- (Dumbarton Oaks Research Library and Collection, 1992)
"All of these papers, with the exception of the last, were originally delivered on 3 November 1990, in the course of a meeting ... to honor the fiftieth anniversary of the founding of Dumbarton Oaks." –p. 3.