Hollerith key punch
|Caption||Hollerith key punch. Illustration for Harmsworth’s Business Encyclopedia and Commercial Educator (c 1926).|
|Artist||English Photographer (20th Century)|
|Artwork medium||black and white photograph|
|Copyright notice||© Look and Learn|
|Keywords||history historical 1920s business commerce commercial trade twenties Hollerith key punch calculations entered card punched|
|Image ref||Maximum size available||Views|
|M460550||5,102 x 3,136 pixels||0|
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