Althorp Papers. Vols. mmxliv-mmliii. Foreign Office papers; 1880-1896. Printed. A few documents are in French. Most of the papers are Cabinet circulars and include printed copies of correspondence, memoranda and reports, with a few pamphlets and books. Ten volumes.
Althorp Papers. Vols. mmdlxviii, mmdlxix. Letters to Beauchamp from his father Horace; 1827-1851, n.d. For Beauchamp's letters to his father see Add. MS 77844. Two volumes.
Althorp Papers. Vols. mmdlxxi, mmdlxxii. Letters to Beauchamp Seymour from Thomas George Baring, 1st Earl Northbrook, First Lord of the Admiralty, 1880-1885, relating to Beauchamp's duties as Commander in Chief in the Mediterranean; 1880-1883. Two volumes.