Alan L. Olmstead is Distinguished Research Professor of Economics at theUniversity of California at Davis. His recent book with Paul W. Rhode, CreatingAbundance: Biological Innovation and American Agricultural Development,examines three centuries of technological advance in American agriculture. Heis one of six Editors-in-Chief of the 4,500 page Historical Statistics of the UnitedStates: Earliest Times to the Present, Millennial Edition. Professor Olmstead’sresearch has appeared in the leading economics and history journals. He hasheld a number of administrative and advisory positions and currently serveson the Board of Directors of the National Bureau of Economic Research. Heis a past president of the Economic History Association and the recipient ofnumerous research awards.