Althorp Papers. Vol. mmdcclxxix. Horse book started by John Charles, Viscount Althorp, in 1803; used by his successors Frederick, 4th Earl Spencer, and John Poyntz, 5th Earl Spencer; 1803-1954.
Althorp Papers. Vol. mmdcclxxxiv. Henry Bailey's cattle accounts; May 1825-Oct. 1829. Includes a letter from Patricia Ridley to Mrs Bailey dated 11 June 1815.