Deutsche Hollerith Maschinen Gesellschaft mbH

Deutsche Hollerith Maschinen Gesellschaft mbH is the manufacturer and maintenance company behind the punched-card machinery used by the Nazi biometric centre in Landauer House. The company’s machines help transform people’s bodies, histories, and identities into records that can be sorted and analyzed at scale. Their presence connects the centre’s claim to disinterested scientific measurement with the wider machinery of racial classification and persecution.

Equipment at the Biometric Centre

After the rooms of Landauer House have been refitted for research, a lorry brings heavy machines to the garage, which had once housed two Landauer motor cars. The black steel-and-Bakelite equipment bears the manufacturer’s name on brass plates. One machine resembles a mangle; another has a typewriter keyboard but is as large as an upright piano. Together with soldiers’ boxes of files, the machines make the garage resemble a newspaper print shop, with machinery and ink replacing the signs of domestic life.

The centre gathers extensive information about each person it examines: birth details, languages, religion, race, nationality, medical history, and conditions reported in the family ancestry. Subjects then pass through tests, blood-group checks, blood-pressure readings, and standardized physical measurements. The Hollerith machines provide the means to sort the resulting records, turning individual measurements and answers into material for institutional comparison. What the process calls confidential data is gathered under the authority of an occupying regime, not in a setting where the subjects’ freedom or consent is established.

Classification at Scale

The narrative makes explicit that the company’s machinery serves a project extending beyond the house. Monthly returns count hundreds of people by categories including Slav, Aryan, and Mischlinge, while Roma and Jews are recorded separately in an addendum. The records are duplicated onto punched cards, packed into boxes, and sent by courier to Prague, then onward to Berlin. There, the machines are expected to sort, assemble, and analyze the cards at a stated rate of 150 per minute, supposedly revealing patterns in race and identity.

This numerical promise sits beside the centre’s careful staging of scientific neutrality. Staff are instructed to treat subjects respectfully, and examiners assure them that the examinations are painless and confidential. Yet the orderly procedures do not make the enterprise politically neutral: the data is collected through racial categories and assembled in the service of a state seeking to classify populations. The machines’ apparent precision gives administrative scale and technical form to a premise that the research itself cannot reliably establish.

Company and Institutional Purpose

The company appears not only as a supplier but as an ongoing service provider. A letter from Deutsche Hollerith Maschinen Gesellschaft asks to reschedule weekly maintenance visits from Tuesdays to Wednesdays, a routine adjustment that places the equipment within the ordinary operating schedule of the centre. The contrast is stark: the same office that processes racial returns handles maintenance as a matter of normal administration.

The limits of the centre’s research become visible during Reich Protector Heydrich’s inspection. Stahl explains that the researchers are measuring fine variations in phenotype and using the Hollerith machines to sort collected data in search of combinations that could support a racial diagnosis. He also acknowledges that the supposed inherited diseases do not map neatly onto Jewish identity: not all Jews have them, and people with those diseases are not all Jews. The machinery can organize the information, but its capacity to sort does not prove the racial distinctions the institution expects it to find.

Removal and Afterlife

When the Reich Protector’s office orders the Biometric Centre closed, its personnel leave and its contents are dispersed. Files are boxed for transfer to Berlin; furniture is sent to offices in Město, Prague, and Warsaw. Technicians unscrew the Hollerith machines from the garage floor and load them onto trucks for dispatch to an undertaking expected to make more fruitful use of them: a new camp complex in Silesia near Oświęcim.

The transfer gives the machines’ story its decisive consequence. Their role does not end with the failure of the biometric centre to produce a scientific means of distinguishing racial groups. The equipment is redirected into another institutional setting, carrying forward the capacity to process records even as the research project that first installed it is dismantled. In the novel, Deutsche Hollerith Maschinen Gesellschaft mbH therefore marks the passage from the household’s conversion into a site of measurement to the migration of its data-processing machinery into the camp system.