In this undated photo provided by the Franklin D. Roosevelt Presidential Library and Museum, a Census Bureau staffer operates an electric tabulator at the U.S. Census Bureau. Data for the 1940 Census ... more 
In this undated photo provided by the Franklin D. Roosevelt Presidential Library and Museum, a Census Bureau staffer operates an electric tabulator at the U.S. Census Bureau. Data for the 1940 Census was collected by hand and transferred to punched cards which were then run through the tabulating machine. The tabulating machine printed the final calculation. (AP Photo/Franklin D. Roosevelt Presidential Library Museum) less 
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Associated Press | Photo By Franklin D. Roosevelt Presidential Library Museum
Sun, Mar 18, 2012 4:03 PM EDT