Sydney Smith to Francis Jeffrey, [1] October 1820 in A Memoir of the Reverend Sydney Smith. By his Daughter, Lady Holland. With a
Selection from his Letters, edited by Mrs. Austin. 2 vols (London: Longman, Brown, Green, and Longmans, 1855).
John Whishaw to Thomas Smith, 14 October 1820 in The “Pope” of Holland House: Selections from the Correspondence of
John Whishaw and his Friends 1813-1840. (London: T. Fisher Unwin, 1906).