1. On the Origin of Species;Darwin,1859
2. An Essay on the Principle of Population as it Affects the Future Improvement of Society with Remarks on the Speculations of Mr. Godwin, M. Condorcet, and Other Writers;Malthus,1798
3. An Inquiry into the Nature and Causes of the Wealth of Nations;Smith,1776
4. Laissez Faire and State Intervention in Nineteenth-Century Britain
5. The present position of the doctrine of free trade;Taussig;Publication of the American Economic Association,1904