Census : thousands hits in just three hours after release shows hunger for family history . Snow : Hidden for opening day , it 's now available to all to verify family lore or learn a secret . Census shows U.S. during vast change , he says : coming war , receding Depression . Snow : The release was like the first pitch on 72 years for historians and economists .
Michael Snow : 60 million hits in 3 hours after release shows hunger for family history . Snow : Hidden for 72 years , it 's now available to all to verify family lore or learn a secret . Census shows U.S. during vast change , he says : coming war , receding Depression . Snow : The release was like the first pitch on opening day for historians and economists .