Protection in Germany: A History of German Fiscal Policy during the Nineteenth Century. William HarbuttProtection in Canada and Australasia. C. H. ChomleyProtection in France. H. O. MeredithProtection in the United States: A Study of the Origin and Growth of the American Tariff System and Its Economic and Social Influences. A. Maurice Low George Mygatt Fisk Journal of Political Economy 1905 13(4), 604-605 open access
Elements of the Fiscal Problem. L. G. Chiozza Money George Mygatt Fisk Journal of Political Economy 1904 12(3), 435-436 open access