Correspondence of Robert Campbell with Henry Willock, Sir John Malcolm, H Russell, John Browning, J Caulfield, M Lumsden, J R Courteney, H A Montgomery and B Cator regarding the establishment of diplomatic relations with Persia, Greek independence etc
Letters to Robert Campbell from Sir John MacDonald (Envoy to Persia) regarding his mission, events at the Persian Court, Persian affairs, Anglo Persian relations etc
Official correspondence of Robert Campbell with Lord William Bentinck, John M Macleod, Sir John Malcolm, Lord Ellenborough, Charles Metcalfe, T C Robertson, Bishop Heber of Calcutta, Lord Clare and B H C Plowden
Papers of a conference between the Duke of Wellington, Lord Ellenborough and William Astell (Chairman of the East India Company) and Robert Campbell (Deputy Chairman) at Apsley House regarding the renewal of the East India Company's' Charter
Correspondence of Sir Robert Campbell with Marquess Wellesley and others regarding the publication of the latter's despatches as Governor General of India, his achievements in India and the gratitude of the Court of Directors etc
Correspondence of Sir Robert Campbell from and Rev George N Tredenik at Ballyshannon and Ramsgate, Sir Howard Douglas in Corfu and the Board of Ordnance etc regarding the new church at Ballyshannon, the government of the Ionian Isles, providing surety for Capt Campbell, etc