VOL. VI.
- Preface to the Second Posthumous Volume, in a Letter to the Right Hon. William Elliot v
- Fourth Letter on the Proposals for Peace with the Regicide Directory of France: with the Preliminary Correspondence 1
- Letter to the Empress of Russia, November 1, 1791 113
- Letter to Sir Charles Bingham, Bart., on the Irish Absentee Tax, October 30, 1773 121
- Letter to the Hon. Charles James Fox, on the American War, October 8, 1777 135
- Letter to the Marquis of Rockingham, with Addresses to the King, and the British Colonists in North America, in Relation to the Measures of Government in the American Contest, and a Proposed Secession of the Opposition from Parliament, January, 1777 149
- Letter to the Right Hon. Edmund S. Pery, in relation to a Bill for the Relief of the Roman Catholics of Ireland, July 18, 1778 197
- Two Letters to Thomas Burgh, Esq., and John Merlott, Esq., in Vindication of his Parliamentary Conduct relative to the Affairs of Ireland, 1780 207
- Letters and Reflections on the Executions of the Rioters in 1780 239
- Letter to the Right Hon. Henry Dundas: with the Sketch of a Negro Code, 1792 255
- Letter to the Chairman of the Buckinghamshire Meeting, held at Aylesbury, April 13, 1780, on the Subject of Parliamentary Reform 291
- Fragments of a Tract relative to the Laws against Popery in Ireland 299
- Letter to William Smith, Esq., on the Subject of Catholic Emancipation, January 29, 1795 361
- Second Letter to Sir Hercules Langrishe, on the Catholic Question, May 26, 1795 375
- Letter to Richard Burke, Esq., on Protestant Ascendency in Ireland, 1793 385
- Letter on the Affairs of Ireland, 1797 413