Bertholf, Robert J., ed., A Great Admiration: H. D. / Robert Duncan Correspondence 1950-1961, Lapis Press, 1991.

Bertholf, Robert J., and Ian W. Reid, eds., Robert Duncan: Scales of the Marvelous, New Directions, 1979.

Cirlot, J. E., A Dictionary of Symbols, Philosophical Library, 1971.

Dickey, James, Babel to Byzantium: Poets and Poetry Now, Straus & Giroux, 1968, pp. 173-77.

Duncan, Robert, "Pages from a Notebook," in The New American Poetry, edited by Donald M. Allen, Grove Press, 1960, pp. 400-07.

----, Selected Poems, edited by Robert J. Berthoff, New Directions, 1993.

----, The Years as Catches: First Poems, 1939-1946, Oyez, 1966.

Ellingham, Lewis, Poet Be Like God: Jack Spicer and the San Francisco Renaissance, University Press of New England, 1988.

Faas, Ekbert, Towards a New American Poetics: Essays and Interviews: Charles Olson, Robert Duncan, Gary Snyder, Robert Creeley, Robert Bly, Allen Ginsberg, Black Sparrow Press, 1978.

----, Young Robert Duncan: Portrait of the Poet As Homosexual in Society, Black...