John Ciardi, "Robert Frost: An American Bard," in the Saturday Review, March 24, 1962. pp. 15-16; excerpted in "Frost, Robert (1875–1963)," in Modern American Literature, Vol. 1, 5th ed., St. James Press, 1999, p. 395.

The Charters of Freedom," U.S. National Archives and Records Administration, www.archives.gov/national-archives-experience/charters/charters.html (October 29, 2006).

Cowley, Malcolm, "The Case Against Mr. Frost," in the New Republic, September 18, 1944, pp. 346-47; excerpted in "Frost, Robert (1875–1963)," in Modern American Literature, Vol. 1, 5th ed., St. James Press, 1999, p. 394.

Denis Donoghue, "A Mode of Communicating: Frost and the 'Middle' Style," in the Yale Review, Winter 1963. p. 216; excerpted in "Frost, Robert (1875–1963)," in Modern American Literature, Vol. 1, 5th ed., St. James Press, 1999, p. 395.

Dragland, S. L., "Frost's Mending Wall," in the Explicator, Vol. 25, No. 5, January 1967; reprinted in Periodicals Index Online.

Elliott, G. R., "An Undiscovered America In Frost's Poetry," in the Virginia Quarterly Review, July 1925, pp. 214-15; excerpted in "Frost, Robert (1875–1963)," in...