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History
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A 407 at U.S. Army's Redstone Arsenal in 1961.
A 407 at U.S. Army's Redstone Arsenal in 1961.
IBM 407 (left) with IBM 519 (on right).
IBM 407 (left) with IBM 519 (on right).
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Hollerith 1890 tabulating machine with sorting box.
Hollerith 1890 tabulating machine with sorting box.
Hollerith punched card
Hollerith punched card
IBM Type 285 tabulators in use at U.S. Social Security Administration circa 1936
IBM Type 285 tabulators in use at U.S. Social Security Administration circa 1936
Early IBM D11 tabulating machine, with covers removed
Early IBM D11 tabulating machine, with covers removed