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MacGowan, Christopher, ed. The Letters of Denise Levertov and William Carlos Williams. New York: New Directions, 1998.

MacGowan, Christopher ed. The Collected Poems of William Carlos Williams, Volume II, 1939-1962. New York: New Directions, 1988.

MacGowan, Christopher ed. The Collected Poems of William Carlos Williams, Volume I, 1909-1939. New York: New Directions, 1986.