1. Andelson, R. V. (ed.) (1979). Critics of Henry George: A centenary appraisal of their strictures on Progress and Poverty. Cranbury, NJ: Associated University Presses.
2. Barry, H., III (1979). Birth order and paternal namesakes as predictors of affiliation with predecessor by presidents of the United States. Political Psychology, 1(2), 61–66.
3. Barry, H., III. (1984). Predictors of longevity of United States presidents. Omega, 14, 315–321.
4. Beard, C. A. (1913). An economic interpretation of the Constitution. New York: Macmillan.
5. deMause, L. (1975). The independence of psychohistory. Journal of Psychohistory, 3, 163–183.