MIAMI (AP) — Programs such as NBC's "Who Do You Think You Are?" and PBS' "Faces of America" are helping fueling the trend in genealogy. But for many Hispanics, tracing the family tree hasn't been so easy.

Now that's changing for America's largest minority group as a wealth of genealogical data, including a landmark 1930 census in Mexico, is going online. Discovering information about one's great-great grandparents and other relatives could be keystrokes away for many of the nearly 32 million Mexican-Americans — a group long left out of the sleuthing done largely by European-Americans and some African-Americans.

The Church of Jesus Christ of Latter-day Saints, long America's largest aggregator of genealogical records, this year completed its more than three-year-old project to create a searchable digital index of Mexico's massive 1930 census. It has also made the information available to the Internet genealogy company, Ancestry.com....