University of Colorado
University of Colorado: Principles of Macroeconomics: Business Cycles, Aggregate Demand and Supply
A comprehensive look at the way aggregate demand and supply affect the business cycle. Information used is current to 2003. From the Department of Economics at the University of Colorado.
Other
The Aggregate Supply Curve
"The Aggregate Supply Curve," by Baumol, William J., and Alan S. Blinder. Economics: Principles and Policy, 7th ed. Orlando, FL: The Dryden Press, 1997, pp.628-642.
The Federal Reserve System
Federal Reserve Board: Sustainability and Monetary Policy
"Sustainability and Monetary Policy," Remarks by Governor Laurence H. Meyer before the National Economists Club and the Society of Government Economists, Washington, D.C., January 20, 2000. With links to graphics files in PDF format.