Dumbarton Oaks inaugural lectures : November 2nd and 3d, 1940 - Focillon, Henri, 1881-1943; Rostovzeff, Michael Ivanovitch, 1870-1952; Morey, Charles Rufus, 1877-1955; Koehler, Wilhelm Reinhold Walter, 1884-1959 (Harvard University Press, 1941)