Althorp Papers. Vols. mmcdxcviii-mmdi. Correspondence relating to the NRA, including letters by the Association's secretary, Ed. St. John-Mildmay; 1860-1887, n.d. Four volumes.
Althorp Papers. Vol. cii. Inventories of the goods of the 1st Duke and Duchess of Marlborough, with a few of their grandson, John Spencer, chiefly the contents of Holywell House, the Ranger's Lodge (afterwards Cumberland Lodge) in Windsor Great Park, Marlborough House and Blenheim Palace; 1690s-...