Althorp Papers. Vols. mcmxcv-mmxxxvii. Administrative papers and official correspondence relating to Ireland from the four Liberal governments between 1868 and 1895, mostly from the two periods during which Spencer served as Viceroy of Ireland, 1868-1874 and 1882-1885; 1868-1895, with a few papers earlier in date. Included are autograph drafts of memoranda and letters by Spencer and copies of letters by him, a few being autograph. See also Northamptonshire Record Office, SOX84, SOX335, SOX35...
Althorp Papers. Vol. mmxxxix-mmxliii. Miscellaneous papers and pamphlets relating to Spencer's two terms as Viceroy of Ireland; 1868-1895, n.d. Partly printed. Five volumes.
Althorp Papers. Vols. mmccclxxix-mmccclxxxi. Letters to Lady Spencer from Laura Oldfield, one of the Lady Managers of the Parochial Mission Women Fund; 1865-1874. Including various papers relating to the Fund, partly printed. Three volumes.
Althorp Papers. Vols. mmdlvii-mmdlxvii. Correspondence and papers relating to Charles Seymour's affair with Adelaide Meves and her subsequent financial claims on his family; 1849-1914, n.d.