Negative, black and white. Herman Hollerith's tabulator, ca. late 1880s. Caption description: "Picture here is a full scale model of a Hollerith Tabulator designed and built for the Computer Museum by Doctor Robert Guatelli, a model maker in New York. This is a punch-card computing device invented by Herman Hollerith to tabulagte the 1890 United States Census. It cut census calculating time from seven to three years."
