Journal of Political Economy 1921 29(8), 692-694

Journal of Political Economy 1917 25(5), 409-441

Journal of Political Economy 1916 24(6), 572-595

Journal of Political Economy 1915 23(2), 144-165

Journal of Political Economy 1914 22(3), 218-238

Journal of Political Economy 1914 22(2), 105-131

Journal of Political Economy 1914 22(1), 1-42

Journal of Political Economy 1913 21(7), 577-592 open access

Journal of Political Economy 1912 20(6), 588-598 open access

Journal of Political Economy 1912 20(9), 869-885