From colonial times through the nineteenth century, Irish immigration has made its mark on America. Between 1820 and 1860 alone, almost 2 million immigrants from Ireland arrived in the United States. Today over 35 million Americans claim to have Irish immigrant ancestors in their family tree. But do you know where and how to look for them? This remarkable collection containing forty-two of our best titles on Irish genealogy--and capturing hard-to-find data on Irish immigration--will point you in the right direction.