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. Vol. mmdlxx. 1. Letters to Beauchamp from his brother Charles; 1828-1854, n.d. For Beauchamp's letters to Charles see Add. MS 77853. 2. Letters to Beauchamp from his sister Adelaide; 1841-1877. For Beauchamp's letters to Adelaide see Add. MS 77888.
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.
Althorp Papers. Vol. mmdlxxiii. 1. Letters to Beauchamp from the Prince of Wales; 1869-1894, n.d. 2. Letters to Beauchamp from Admiral Sir Anthony Hoskins relating to the naval action in Egypt; July-Sept. 1882, n.d. 3. Letters to Beauchamp from Admiral Sir F. Sullivan relating to the naval ac...
Althorp Papers. Vols. mmdlxxiv-mmdlxxix. General correspondence of Beauchamp Seymour, being mostly letters addressed to him. Many relate to naval matters; [circa 1827]-1894, n.d. Partly French and Italian. Six volumes.
Althorp Papers. Vol. mmdlxxxii. Two illustrated congratulations presented to Beauchamp 'in recognition of his distinguished services in the late war in Egypt'; one from the Worshipful Company of Cutlers of London, the other from the Lord Mayor, Aldermen and City of London presented jointly to Be...
Althorp Papers. Vol. mmdlxxxiv. 1. Letters and associated papers addressed to Beauchamp Seymour as Commander of H.M. Steam Sloop Cormorant; 1845-1847. 2. Beauchamp Seymour's account of his passage home with H.M.S. Cormorant through the Straits of Magellan; 1847.
Althorp Papers. Vol. mmdlxxxv. Letters and papers, mostly from Frere (solicitor), also two from Lord Spencer, relating to the East Molesey estate, Surrey; 1875-1876.