Althorp Papers. Vol. dcliv. Letters from Sir John Beckett (afterwards 2nd Bart.), as under secretary at the Home Office; 1807-1817. Political and foreign news and yeomanry matters. Sir John Beckett, 2nd Baronet: Letters, as Under Sec. at the Home Office, to Lord Spencer: 1807-1817.
Althorp Papers. Vol. dclxxxiii. Letters from Richard, 2nd Earl of Lucan (1764-1839), brother-in-law of Lord Spencer, including his views on the Catholic emancipation bill; 1784-1833. Richard Bingham, 2nd Earl of Lucan: Letters to Lord Spencer: 1784-1833.
Althorp Papers. Vol. dclxxi. Letters from Herman Witsius Ryland (1760-1838), First Secretary of Canada; 1787-1826. Concerning colonial politics. Herman Witsius Ryland, First Secretary of Canada: Letters to Lord Spencer: 1787-1826.