 As a translator of Modern Greek poetry, he had a long and productive collaboration with Edmund Keeley.They produced many books together, among them "Four Greek Poets" (1966), the "Collected Poems" of George Seferis (1967) and of C.P.Cavafy (1975) and "Selected Poems" by Angelos Sikelianos (1979) and Odysseus Elytis (1981).