D3155/WH/2939 | Volume of correspondence and other papers, marked '62' and labelled 'Confidential papers on the... | Apr 1823-Jan 1827 | Sir Robert John Wilmot Horton, baronet (1784-1841), Under-Secretary of State for War and the Colonies 1821-1828, Governor and Commander-in-Chief of Ceylon 1831-1837 | Derbyshire Record Office |