1. Epic of America. Boston: Little, Brown and Company, 1931. 433 p.
2. The Scientific Outlook. New York: W. W. Norton and Company, 1931. 277 p.
3. Died a Specialist
4. President's Research Committee on Social Trends. Recent Social Trends in the United States. New York: McGraw-Hill Book Company, 1934. 1052 p.
5. American Civilization Today. New York: McGraw-Hill Book Company, 1934. 152 p.