Colin Cherry, On Human Communication. New York: Wiley and M.I.T., 1957 (now in paperback).
Susanne K. Langer, Philosophy in a New Key. Cambridge: Harvard University Press, 1952 (now in paperback).
Benjamin Lee Whorf, Language, Thought, and Reality. New York: Wiley and M.I.T., 1956.
Conclusion
I. Bernard Cohen and F.G. Watson (Eds.), General Education in Science. Cambridge: Harvard University Press, 1952.
Alfred North Whitehead, The Aims of Education. New York: Macmillan, 1929 (now in paperback).