1 Erratum to: Public Choice DOI 10.1007/s11127-013-0150-2

Due to an unfortunate turn of events the acknowledgements were not presented correctly in the paper published. Please find the correct version on this page, which should be regarded as the final version by the reader.

Acknowledgments

Data for this paper were made available, in part, by Robert Fogel and Stanley Engerman through the ICPSR. The authors gratefully acknowledge the financial support of the Earhart Foundation, as well as the National Science Foundation, SBER#9819061. We thank the editors of Public Choice and our anonymous reviewers for their excellent comments and suggestions. We are also grateful for the helpful comments on earlier drafts made by Tony Affigne, John Aldrich, Keith Dougherty, Michael Gillespie, Kerry Haynie, Cal Jillson, Robert Keohane, Paula McClain, John Tomasi, and Paul Zak. All errors that remain in the paper are the sole responsibility of the authors.