Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.aihs.org/American_Irish_Historical_Society/Welcome.html
Description:
The Society, founded in 1897 to inform the world of the achievements of the Irish in America, is today a national center of scholarship and culture. From its home on New York’s Fifth Avenue, across from the Metropolitan Museum of Art, the Society serves as a focal point of the contemporary transatlantic Irish experience, a place where current public issues are explored, and where the great renaissance in Irish culture is celebrated in lectures, concerts, art exhibits and a literary journal. Non-partisan and non-sectarian from its beginning, the Society welcomes new members and is pleased to make its library and select events open to the public.