The Department of Special Collections holds a small collection of passenger and immigration lists and gravestone inscriptions relating to Irish who immigrated to the United States. A sample of the titles held are listed below. But you can use the LibrarySearch catalog to search for more.
Alphabetical Index to Ulster Emigration to Philadelphia, 1803-1850Emigrants From Ireland, 1847 – 1852: State Aided Emigration Schemes from Crown Estates in Ireland
Irish Emigrants in North America
Irish Emigration to New England through the port of Saint John, New Brunswick, Canada, 1841 – 1849Irish Famine Immigrants in the state of Vermont: Gravestone InscriptionsSince many Irish families immigrated to the United States piecemeal (e.g. a father one year, a wife and children the next), it was a common for family members to lose track of one another. When this occurred, "personal" notices frequently were placed in newspapers with a heavy Irish-American readership. These notices often link a name with a location both in Ireland and in the United States.
Irish relatives and friends : from "Information wanted" ads in the Irish-American, 1850-1871The Search for missing friends : Irish immigrant advertisements placed in the Boston Pilot