Althorp Papers. Vol. mmccclxxvi. Letters to Lady Spencer from her brother in law Charles Robert Spencer, afterwards 6th Earl Spencer; 1881-1902. For further correspondence relating to him, see below.
Althorp Papers. Vol. mmccclxxvii. Letters to Lady Spencer from: 1. Her sister in law Victoria, Lady Sandhurst, nee Spencer. Includes a couple of letters by Charlotte from 1870; 1881-1902. 2. Lord Sandhurst; 1882-1902, n.d.
Althorp Papers. Vol. mmccclxxviii. Letters to Lady Spencer from John Evelyn Denison, Viscount Ossington, Speaker of the House of Commons; 1857-1870, n.d.
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. mmccclxxxii, mmccclxxxiii. Letters to Lady Spencer from Major Landon, Hon. Sec. of the Northamptonshire branch of The Soldiers' and Sailors' Families Association. Includes various additional papers including speeches by Lady Spencer, leaflets etc.; 1883-1903, n.d. Partly printed. Two volumes.
Althorp Papers. Vols. mmccclxxxiv-mmcdxi. General correspondence, being mainly letters addressed to Lady Spencer.; 1851-1903. Partly French, Italian. Including some papers relating to her charity work, partly printed and typewritten. Twenty eight volumes.