Althorp Papers. Vols. mdvi, mdvii. Correspondence with his half sister Victoria (Va) and her husband William, 2nd Baron Sandhurst. Most of the letters are written by Sandhurst; 1866-1910. Two volumes.
Althorp Papers. Vols. mdxvi, mdxvii. Correspondence with and relating to Spencer Lyttelton, brother of George William, 4th Baron Lyttelton. Many of the letters and accompanying papers relate to family attempts to extricate Spencer Lyttelton from financial and other troubles; 1857-1889. Two volumes.
Althorp Papers. Vol. mdxxvii. Letters from Frederick Beauchamp Paget Seymour, later Baron Alcester of Alcester, Charlotte Spencer's cousin; 1852-1885, 1894.
Althorp Papers. Vol. mdxxviii. Correspondence with Luke White, 3rd Baron Annaly. Annaly was married to Charlotte Spencer's niece Lilah, daughter of 3rd Viscount Clifden; 1888, 1895-1910, n.d.
Althorp Papers. Vols. mdcxci, mdcxcii. Letters from Sir Ughtred James Kay-Shuttleworth, later 1st Baron Shuttleworth; Under-Secretary, India Office (1886), Chancellor of the Duchy of Lancaster (1886), Secretary to the Admiralty (1892-1895); 1886-1909.
Althorp Papers. Vols. mdccxxxix, mdccxl. Letters from Sir William Graham Green, private secretary to the First Lord of the Admiralty (1887-1902), Principal Clerk, Admiralty (1902-1907), Assistant Secretary, Admiralty (1907-1911), Permanent Secretary of the Admiralty (1911-1917); 1895-1910, n.d. Includes a draft of one reply from Lord Spencer. For correspondence while private secretary to Spencer, see Admiralty section below.