- The speech of the Right Honorable Lord Viscount Castlereagh, upon delivering to the House of Commons of Ireland His Excellency the Lord Lieutenant's ... Great Britain, 1800. Third edition corrected.
- A report of two speeches delivered by the Right Hon. Lord Viscount Castlereagh, in the debate on the Regency Bill, on April 11th, 1799.
- The speech of the Right Honorable Lord Viscount Castlereagh, upon delivering to the House of Commons of Ireland His Excellency the Lord Lieutenant's ... with Great Britain, ... February 5, 1800.
- Correspondence, Dispatches And Other Papers Of Viscount Castlereagh V5: Second Marquess Of Londonderry: Second Series, Military And Miscellaneous
- The speech of the Right Honourable Lord Viscount Castlreagh, upon delivering to the House of Commons of Ireland, His Excellency the Lord Lieutenant's message on the subject of an incorporating union w