This collection contains a small quantity of personal papers of William Cavendish, 3rd Duke of Devonshire, and should be viewed in conjunction with two other collections held in the Devonshire Archives: the First Series of Correspondence (GB 2495 CS1) which contains the majority of the 3rd Duke's correspondence; and the Papers of William Cavendish, 4th Duke of Devonshire (GB 2495 DF2), which contains further accounts of the 3rd Duke.
The present collection contains a volume of correspondence maintained by the Private Secretary of the 3rd Duke, Sir Robert Wilmot. Primarily dating from 1734-1759, the letters relate to the affairs of the Dukes of Devonshire and to those of Derbyshire, and include many letters sent and received by the 3rd Duke and his son the 4th Duke. There is also a loose letter from Henry Bourne enclosing a letter from a Mr N. Thornhill relating to a living offered by the 3rd Duke; and three copy letters to the 3rd Duke from Colonel Bagshawe.
The other component of the collection is an account book dating from 1737-1753, recording the 3rd Duke's account with Thomas Snow and John Paltock, and including payments received for farm rents, payments of steward's wages, and other payments and receipts.