"Bound photostat of a manual for a Hollerith calculating machine, Das Hollerith - Lochkartenverfahren: Der Steuerapparat und seine Verwendung [The Hollerith - punch card method: The control apparatus and its use] 39 p. ; ill.\n\ntitle page, bottom left, pencil : Leyffart"@en . "No restrictions on use"@en . . . . . "Manual explaining the control apparatus and use of a Hollerith punch card machine.User manual for Hollerith machine with diagrams of punch cards. Pamphlet with beige paper covers and inserted pages held with metal clamp."@en . . . "irn521593" . "The pamphlet was donated to the United States Holocaust Memorial Museum in 1990 by the Technische Sammlungen Dresden."@en . "No restrictions on access"@en . . . "Manual"@en . "approximately 1940" .