The Joint Center for History and Economics is delighted to announce a new research program, to be undertaken at the University of Cambridge and at Harvard University over the period 2010-2014. The program, Exchanges of Economic, Legal and Political Ideas, is the continuation of an earlier program at the Joint Center, Exchanges of Economic and Political Ideas since 1750. Like the earlier program, it has been made possible by generous grants to the University of Cambridge from the Andrew W. Mellon Foundation.