Prints of machinery, most mounted. Not on list of material from Arkwright family and not part of Willersley collection. Provenance unknown. (A few similar prints are held in the Arkwright Society Archives at Cromford). These are plates have been cannibalised from (mainly 19th century) publications. Includes material associated with cotton spinning but also many other inventions This description is by Derbyshire Record Office staff, and updated by an Arkwright Society volunteer, Nov 2017- the illustrations were not mentioned in the original box-list.