Bogard, Travis, Contour in Time: The Plays of Eugene O'Neill, Oxford University Press, 1972.

Boyd, Ernest, Review in Freeman, Vol. 4, December 7, 1921, p. 304.

Carpenter, Frederic I., "Chapter 3: The Early Plays: Romance," in Twayne's United States Authors Series Online, G. K. Hall, 1999.

Gassner, John, "Eugene O'Neill," in American Writers, Vol. 3, Scribner's, 1974, pp. 385-408.

Hammond, Percy, Review in the New York Tribune, November 3, 1921.

Jensen, George H., "Eugene O'Neill," in Dictionary of Literary Biography, Volume 7: Twentieth-Century American Dramatists, edited by John MacNicholas, Gale Research Inc., 1981, pp. 139-65.

Marsh, Leo, Review in the New York Telegraph, November 3, 1921.

Pollock, Arthur, Review in Eagle, November 3, 1921.

Review in the New York Sun, November 3, 1921.

Torres, H. Z., Review in the New York Commercial, November 3, 1921.

Towse, J. Ranken, Review in the New York Post, November 3, 1921.

Whittaker, James, Review in the New York News, November 13, 1921.