Hollerith tabulator. Close-up of the circuit closing press. This machine was first used in the US Census of 1890. From Park Benjamin Modern Mechanism, London and New York, 1892. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Universal Images Group / Universal History Archive |
Taille de l’image : | 3954 px × 5304 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |