- Copies of journals kept by Nassau William Senior recording his visits to France, Germany, Austria, Italy, Ireland, Greece, Algeria and Egypt between 1850 and 1862.
- Correspondence, 1830-1863: Letters to Nassau William Senior from Richard Whately (Drummond Professor of Political Economy in the University of Oxford 1829-1831, and Archbishop of Dublin, 1831-1863), Lord Melbourne, Lord John Russell and others. Also contains letters from Nassau Senior to Archbishop Whatley, the Marquis of Landsdowne, Compte de Tocqueville and others. Among topics discussed or referred to are the property tax, the abolition of transportation, the state of the Irish poor and Irish affairs generally, the evils of the labour rate system, the national education system, the Corn Law question, the amendment of the Poor Law and the American Civil War.
- Extracts from her grandfathers's letters, by Mrs J. St. Loe Strachey (Nassau Senior's granddaughter)
- Extracts by Mrs Strachey from the diaries of Mrs Mary Charlotte Senior, wife of Nassau William Senior.