This volume forms part of a ten volume set on the origins of macroeconomics. The emergence of macroeconomics was probably the single most important development in economics in the twentieth century. The set draws on a broad, international range of sources, and encompasses works by lesser known thinkers who made significant contributions to the field, providing the definitive collection of materials on the origins of the discipline. <p><strong>Volume 4: North American Keynesianism</strong></p><p> 1. <em>Paul A. Samuelson</em>, 'A Synthesis of the Principle of Acceleration and the Multiplier,' <em>Journal of Political Economy</em>, 47, December 1939, pp. 786-797</p><p> 2. <em>Paul A. Samuelson</em>, 'The Simple Mathematics of Income Determination,' in Lloyd Mtzler et al., <em>Income, Employment and Public Policy: Essays in Honor of Alvin H. Hansen</em>, New York, W. W. Norton, 1948</p><p> 3. <em>Alvin H. Hansen</em>, Monetary Theory and Fiscal Policy, New York, McGraw-Hill, 1949</p><p> 4. <em>Mabel F. Timlin</em>, 'The System of the Shifting Equilibrium',Chapter XII and 'The Field of the Shifting Equilibrium', Chapter XIII, Keynesian Economics, Toronto, University of Toronto Press, 1942</p><p> <strong>Expectations and Uncertainty</strong></p><p> 5. <em>Frederick Lavington</em>, 'Uncertainty in its Relation to the Net Rate of Interest,' <em>Economic Journal</em>, 22, September 1912, pp. 398-409</p><p> 6. <em>J. M. Keynes</em>, 'The General Theory of Employment,' <em>Quarterly Journal of Economics</em>, 51, February 1937, pp. 209-223</p><p> 7. <em>Hugh Townshend</em>, 'Liquidity-Premium and the Theory of Value,' <em>Economic Journal</em>, 37, March 1937, pp. 157-169</p><p> 8. <em>Albert G. Hart</em>, Anticipations, Uncertainty, and Dynamic Planning, Chicago, University of Chicago Press, 1940</p>