For Ancestry.com, big data is about to get even bigger. The subscription-based website for finding long-lost relatives already has 6.7 billion historical records and 4.8 billion people named in family ...

It is no longer essential to provide exact addresses from seven decades ago to look for a New York connection. With names, free searches of the 1940 U.S. census first made public in April will unlock ...

It is now easy to access information on individuals from that census, but beware of misspelled names. By Michael Wines The National Archives and Records Administration posted millions of records from ...