Computer Room at the Library of Congress, January 20, 1964
"From left to right: George R. Perreault, head of the Data Processing Offiice, standing at the computer storage unit; Ernest Acosta Jr., digital computer programmer, working at the card reader unit; and Joseph B. Murphy, digital computer programmer, inserting a new tape in one of the tape units. Jan. 20, 1964." The mainframe was an IBM 1401.
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