Statue of Liberty-Ellis Island Foundation - the Ellis Island site gives name, age, date of entry into the United States, and last residence for those processed through Ellis Island. Ellis Island did not open until 1892.
Castle Garden - America's first official immigration center. Records cover the years 1830 through 1892.
Immigrant Ships Transcribers Guild - more than 14,000 passenger manifests from ports around the country.
National Archives Passenger Arrival Records Online - includes New York arrival of Irish Famine immigrants, Germans to America passenger data file, Italians to America, and more.
Immigrant Ancestors Project - sponsored by the Center for Family History and Genealogy at Brigham Young University, uses emigration registers to locate information about the birthplaces of immigrants in their native countries.
A One-Step Portal for On-Line Genealogy - Steve Morse provides alternate ways to search some of the most popular genealogy websites, including Ellis Island and Castle Garden.