If you've got ancestors of Scotch-Irish descent, you'll want to explore the 13 volumes available here. Among these significant volumes, you'll find a collection of Pennsylvania genealogies from Chester county, a location historically scarce on genealogical source material.

Approximately 215,000 individuals referenced. Genealogically valuable because passenger and immigration lists can be an invaluable primary source for tracing most immigrants to the United States, particularly in the 19th century.