1. John Bound is George E. Johnson Collegiate Professor of Economics, University of Michigan, Ann Arbor, Michigan.
2. Breno Braga is Senior Research Associate, Urban Institute, Washington, DC.
3. Gaurav Khanna is Assistant Professor of Economics, School of Global Policy and Strategy, University of California at San Diego, La Jolla, California.
4. Sarah Turner is University Professor of Economics and Education, Souder Family Professor, University of Virginia, Charlottesville, Virginia. Bound and Turner are also Research Associates, National Bureau of Economic Research, Cambridge, Massachusetts.