The 20th century census is U.S. 's best of 1930 , online firm says . Actor Latinos calls census `` most important document '' The three most common surnames were Hernandez , Garcia and Martinez . There are 2 Americans of Mexican descent . The entire 1930 Mexican census is now online for free .
The 20th century census is U.S. 's best of 1930 , online firm says . Actor Latinos calls census `` most important document '' There are 2 Americans of Mexican descent . The entire 1930 Mexican census is now online for free .