TitleImprovements in the methods of and apparatus for compiling statistics: complete specification
PublisherDarling and Son, Ltd
Place of PublicationLondon
Extent7,  p.
Dimensionsoverall: 3/8 in x 8 in x 11 1/4 in
DescriptionThe original patent specification, and thus the first printed account, of the Hollerith electric tabulating machine.
Contains 7 pages of patent application and 3 fold-out diagrams of proposed machine.