Economic Growth
Does the Structure of Banking Matter for Economic Growth? Evidence from U.S. State Banking Markets (with David Wheelock) Published in Explorations in Economic History (April 2013), NBER Working Paper 15710, and Federal Reserve of St. Louis Bank Working Paper 2010-004A.
The Productivity of U.S. States (with Ian McLean) Published in the Journal of Economic Growth (March 2003) and NBER Working Paper 9445.
U.S. Regional Growth and Convergence, 1880 - 1980 (with Ian McLean) Published in the Journal of Economic History (December 1999). Discussed in the New York Times. An additional figure helps clarify the point of the article.