*(Co-written with Bernard Myers, Walter B. Scott, Edward Hubler and Martin Bernstein) "An Intellectual and Cultural History of the Western World", New York: Random House, 1937, 1941, 1965.
* (Co-written with Bernard Myers, Walter B. Scott, Edward Hubler and Martin Bernstein) "An Intellectual and Cultural History of the Western World", New York: Random House, 1937, 1941, 1965.