His books of poetry include What a Kingdom It Was (1960), Flower Herding on Mount Monadnock (1964), Body Rags (1968), The Book of Nightmares (1971), Mortal Acts, Mortal Words (1980), Selected Poems (1980), The Past (1985), When One Has Lived a Long Time Alone (1990), Three Books (1993), Imperfect Thirst (1996), and A New Selected Poems (2000). The first Selected Poems won both the Pulitzer Prize and the National Book Award, while A New Selected Poems was a finalist for the National Book Award. He has also published translations of Yves Bonnefroy, Yvanne Goll, FranÃ§ois Villon, and Rainer Maria Rilke. A collection of interviews, Walking Down the Stairs, was published in 1978.