Volume entitled: "Arrete du Ministre des Travaux Publics portant reglement pour l'Ecole Nationale des Mines, Paris"
Volumes entitled: "The natural history of British shells including figures and descriptions of all the species hitherto discover'd in Great Britain systematically arranged ('in the Linnean manner')"
Manuscript entitled: "Catalogue of the Apparatus of Philosophical Instruments, in the Collection of Her Late Majesty Queen Charlotte, at the Observatory at Richmond in Surrey"
Letter from Hardwick to Euston Station Enlargement Committee, regarding the completion of buildings with accompanying report from a member of his staff
Letter from Hardwick to unknown regarding screening of counter in Great Hall Euston due to cold drafts experienced by staff
Letter from Hardwick to Mr Lund (?) regarding the ‘ornament in the resistance of the new building at Euston Station’
Sketch of an apparatus for advancing stereotype frames of the Difference Engine by cranks and backing them by weights. Superseded. Plan, elevation.
A draft drawing labelled 'Sheet 3', showing card adding axis, mill adding axis, figure wheels, warning bar and lever and tens lifting slide.
General plan and detail of the driving of the calculating part of Difference Engine No. 2. Tracing of BAB A/161.
Difference Engine wheels for driving the cranks which move the matrix frames. Superseded. Plan, elevation.