Tabulator and pantograph

A Census Bureau employee uses a Hollerith Tabulator to calculate results from the 1904 census, with results displayed on dials. With his left hand, this fellow is operating a "pantograph" that can punch holes in cards. A card reading press is by his right hand.

One clever twist: Hollerith made sure that his paper cards were the same size as the dollar bills that existed at the time, so existing boxes and cabinets could be re-used.