CHM Revolution

Date Introduced

1900 ca.

Photographer

Richards, Mark

Dimensions

overall: 5 3/4 in x 12 1/4 in x 20 in

Manufacturer

Hollerith Tabulating Machine Company

Credit Line

Gift of Crescentia Clark

Copyright Owner

© Mark Richards

Location

United States

Keywords

Unit record equipment; Census; Hollerith, Herman

Object ID

X1099.92

Herman Hollerith’s tabulating system sped up the 1890 census, but there was still a lot of manual work involved. Most holes in each of the 60 million cards were individually punched, and the cards were moved and stacked by hand. A similar process was later used by the Department of Agriculture for farm censuses.