Caption

The Great Migration

Summary

Map shows mass emigration of Irish first between 1840 and 1860, then in 1880-1890, almost exclusively to the United States (by 1920, 4.5 million).

Source

The Penguin Atlas of Diasporas. By Gerard Chaliand and Jean-Pierre Rageau. Maps by Catherine Petit. Penguin Books U.S.A. Inc., 1995. (p. 158)

Copyright

Gerard Chaliand and Jean-Pierre Rageau