1890_Census_Hollerith_Electrical_Counting_Machines_Sci_Amer.jpg
Description 1890 Census Hollerith Electrical Counting Machines Sci Amer.jpg | The Hollerith electric tabulating machine being used for the 1890 U.S. A. Census. | |||||||
Date | ||||||||
Source | Illustration in "Scientific American" magazine, Aug. 30, 1890. Via reproduction at [1] | |||||||
Author | Artist not credited. | |||||||
Permission
( Reusing this file ) |
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