(XXVII. ff. 25). 2 Aug. 1774-3 Apr. 1775. John Murray, Envoy at Constantinople: Correspondence with Sir R. M. Keith: 1772-1775. includes: f. 37 Harold Hopley Sherlock: Letter to Rev. P. Bliss: 1839.
(XV. ff. 94). 21 Feb.-24 Nov. 1784. Francis Godolphin Osborne, Marquess of Carmarthen; 5th Duke of Leeds: Despatches to, from Sir R. M. Keith: 1783-1789.
(XX. ff. 60). 25 June-25 Oct.1788. Francis Godolphin Osborne, Marquess of Carmarthen; 5th Duke of Leeds: Despatches to, from Sir R. M. Keith: 1783-1789.
(XXIII. ft. 220). 27 Feb.-8 Sept. 1790. Francis Godolphin Osborne, Marquess of Carmarthen; 5th Duke of Leeds: Despatches to, from Sir R. M. Keith: 1783-1789. includes: ff. 315, 317 Thomas Sherlock, Bishop of London: Correspondence with the 1st Lord Hardwicke: 1738-1758.
(XIII. ff. 91). 19 June,1782-3 May, 1783. includes: ff. 1-8, 87-91 Charles James Fox, Secretary of State: Despatches to, from Sir R. M. Keith: 1782, 1783. ff. 10-87 Thomas Robinson, 2nd Baron Grantham: Correspondence with Sir R. M. Keith: 1773-1783.
(XVII. ff. 94). 1 Oct. 1785-25 Oct. 1786. Francis Godolphin Osborne, Marquess of Carmarthen; 5th Duke of Leeds: Despatches to, from Sir R. M. Keith: 1783-1789.
(XII. ff. 93). 15 Sept. 1781-19 June, 1782. includes: ff. 1-70 David Murray, 2nd Earl of Mansfield: Correspondence, as envoy at Paris and Secretary of State, with Sir R. M. Keith: 1772-1785. ff. 71-93 Charles James Fox, Secretary of State: Despatches to, from Sir R. M. Keith: 1782, 1783.