1. Cambon, Glanco. The Inclusive Flame: Studies in American Poetry. Indiana: Indiana UP, 1963.
2. Ehrenpreis, Irvin. “The Age of Lowell.” Robert Lowell: A Portrait of the in His Time. New York: David Lewis, 1970.
3. Fein, Richard J. Robert Lowell. New York: Twayne Publishers, 1970.
4. Lowell, Robert. Lord Weary’s Castle. New York: Harcourt, 1947.
5. Staples, Hugh B. Robert Lowell: The First Twenty Years. New York: Farrar, Strauss and Cudahy, 1962.