SUPPLEMENTARY HARDWICKE PAPERS. Vol. I (ff. 91). (1) Correspondence of Philip Yorke, 2nd Earl of Hardwicke, with William Henry Cavendish Cavendish-Bentinck, 3rd Duke of Portland; 1783-1784. ff. 1-28. (2) Correspondence of other members of the Yorke family, including three letters [1807], 180...