National, state and local government agencies or departments can be a good source of historical and genealogical information.
As the nation's record keeper, the National Archives preserves important U.S. government materials for historical and legal reasons. Some examples of records retained are census records, court records, passport applications, land records, military records, immigration and naturalization records, treaties, maps, charts, drawings and photographs.
An alphabetical listing of more than 180 family history and genealogical categories with over 262,500 links to web sites. An excellent starting point for any family history research on the net.
Ellis Island Records
Contains a searchable database of over 22 million names of immigrants, passengers and crew members that came trhough Ellis Island and the Port of New York from 1892 to 1924. Another helpful site to access Ellis Island Records and other sites is a website by Steve P. Morse.