Irish genealogist and geographer Brian Mitchell is the author of numerous textbooks on Irish genealogy, including several how-to books, collections of ships' passenger records, and guides to Irish parish and cemetery records. This offering by Mr. Mitchell was inspired by the growing number of Irish sources available on the Internet. It provides an up-to-date overview of the key sources for Irish research. Considering that more than 70 million persons emigrated from Ireland over a 300-year period, researchers should welcome Brian Mitchell's latest contribution to our understanding of this subject.