Between 1850 and 1914 about 55 million Europeans migrated to the New World including North and South America, and Australia. This movement marked a profound shift in global population and economic activity. The authors describe this phenomenon and analyse the effects that underlie it. '(The authors) have painstakingly pieced together historical data sets from diverse sources and conducted rigorous analyses to provide an understanding of the economic fundamentals of European mass migration. ... Hatton and Williamson are to be congratulated for weaving together a series of empirically rigorous studies of European emigration into a superbly written and edited volume ... should be on the must-read list of scholars interested in the labour market impacts of contemporary immigration to the United States.' Economic Geography