1. Department of Economics, Yale University. This research has been supported in part by grants from the National Science Foundation and the German Marshall Fund of the United States. The paper was revised while I was a visiting scholar at the Russell Sage Foundation. For helpful comments and suggestions I thank Charles Calomiris, Bruce Carruthers, Robert Chirinko, Marco Da Rin, Amil Dasgupta, Jeremy Edwards, Jürgen Eichberger, William English, Nicola Fuchs, Isabel Gödde, Herschel Grossman, Richard Grossman...