(XXV. ff. 150). 4 Jan.-10 Sept.1792. William Wyndham Grenville, Baron Grenville; Prime Minister: Correspondence with Sir R. M. Keith: 1789-1792. includes: f. 272 Reverend Thomas Henry Whorwood: Letter to Rev. P. Bliss: 1833.
(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.
(XXXII. ff. 139). 18 Mar. 1785-2 Oct. 1787. Sir Robert Ainslie, Ambassador to Turkey: Despatches to, from Sir R. M. Keith: 1776-1788. includes: ff. 417, 423 Frederick Lygon, 6th Earl Beauchamp: Letters to Rev. P. Bliss: 1851.
(XXXIII. ff. 33). 25 Sept. 1787-11 Feb. 1788. Sir Robert Ainslie, Ambassador to Turkey: Despatches to, from Sir R. M. Keith: 1776-1788. includes: f. 522 Charles Carr Clerke, Archdeacon of Oxford: Letters to Rev. P. Bliss: 1847, 1854.