Image 8 of Plate, punch card, and instructions for Herman Hollerith's Electric Sorting and Tabulating Machine, ca. 1895.

Tabulating Machine - History-Computer

Hollerith patents the electric tabulating system, January 8, 1889 - EDN

3.1 Hollerith's punchcard machine

Tabulating Machines

The Buffalo History Gazette: PEOPLE COUNT - Making Sense Out of the Census

Hollerith hi-res stock photography and images - Alamy

Image 8 of Plate, punch card, and instructions for Herman

Image 8 of Plate, punch card, and instructions for Herman Hollerith's Electric Sorting and Tabulating Machine, ca. 1895.

Punched cards from Korsakov, Babbage, Hollerith to IBM and computers - KASS

National Museum of American History

Douglas W. Jones's punched card index

3.1 Hollerith's punchcard machine

The use of the “Hollerith” tabulating & sorting machines by wholesale merchants, Ltd British Tabulating Machine Company, IBM