The 1930 census is America 's best of 20th century , online it says . Actor Edward James Olmos calls it ` ` most important document '' Therefore , it is fitting that the world 's largest online family history resource now has an expansive collection to serve this important demographic , '' said Josh Hanna , Ancestry.com executive vice president , in a statement . There are 10 million Americans of Mexican descent . The entire 1930 Mexican census is now online for free .
The 1930 census is America 's best of 20th century , online it says . Actor Edward James Olmos calls it ` ` most important document '' There are 10 million Americans of Mexican descent . The entire 1930 Mexican census is now online for free .