1. Center for Policy Research, 426 Eggers Hall, Syracuse University, Syracuse, NY 13244.
2. Department of Economics, 3105 Tydings Hall, University of Maryland, College Park, MD 20742.
3. Department of Economics, Gatton College of Business and Economics, University of Kentucky, Lexington, KY 40506.
4. American Express—TRS, 10030 North 25th Avenue, Building 10400, Phoenix, AZ 85021.