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Description: Census Bureau Machinists and Technicians. Because of the immense volume of data being tabulated and need for the specialized technology, the Census Bureau employed highly skilled men and women to maintain and custom-build the agency's machinery and computers. In this photograph, technicians clean and maintain some of the hundreds of key-punches used to produce punch cards for tabulation.

Year: 1950s

Photo Credit: U.S. Census Bureau, Public Information Office (PIO)

Free to use in news media and public information products.