William Lamb, 2nd Viscount Melbourne, Prime Minister, his wife, Lady Caroline née Ponsonby, and William Francis Cowper-Temple formerly Cowper, Baron Mount Temple. The Lamb letters are partly cited in Lord David Cecil, The Young Melbourne (London, 1929). Holland's letters to Melbourne, 1831-1840, ...
1. ff. 1-80v. William Lamb, 2nd Viscount Melbourne, and his wife, Lady Caroline, with Lord Holland; 1838-1840. 2. ff. 81-175. William Francis Cowper-Temple formerly Cowper, Baron Mount Temple; [1835?]-1844.
1. ff. 1-123. William Lamb, 2nd Viscount Melbourne, to Lady Holland; 1800-1844. 2. ff. 124-213. Lady Caroline Lamb, Viscountess Melbourne, with Lady Holland; 1806-1828.