What Modern Catholics Think about Birth Control: A New Symposium / edited by William Birmingham. New York: Signet Books, 1964. "Toward a Positive Sexual Morality" by Michael Novak, p. 109., 1964, PNVK 2/27, Box: PNVK 2, Folder: 27. Michael Novak Collection, NVK. University of Notre Dame Archives. https://archivesspace.library.nd.edu/repositories/2/archival_objects/464174 Accessed February 26, 2026.