Columbia University Libraries subscribe to Ancestry Library, the library edition of Ancestry.com (access restricted to current Columbia affiliates).

Ancestry Library includes: digitized images of the United States Federal Census from 1790 forward; the American Genealogical Biographical Index; Passenger and Immigration Lists Index; United Kingdom and United States Directories1680-1830; court, land, and probate records; and many other resources. It also includes telephone directory information for the U.S.