Letters from Henry Peter Brougham, 1st Baron Brougham and Vaux 1830, many relating to his articles in the Morning Chronicle and the Edinburgh Review. Included (ff. 105, 133, 172) are drafts, 1832-1842, of letters from Allen to Brougham.
Correspondence of, and relating to, Henry, 1st Baron Holland, 1743-1757. Extracts, 1822, from Add MS 51375-51446, followed (ff. 43-44) by lists of some of the contents.
Journal by J. Allen of the last illness of Hon. Georgina Fox (d. 1 Nov 1819), younger daughter of Lord and Lady Holland; 17 Aug-31 Oct 1819 (ff. 1-13b), followed (ff. 14-21b) by rough notes for the journal by Allen and others and including (ff. 6b, 22-29) medical prescriptions, etc., for Georgina...
Letters from Horace Walpole, [4th Earl of Orford 1791], to Sir Horace Mann, 1st Bart., Resident at Florence, chiefly relating to Sir Robert Walpole, [1st Earl of Orford 1742]; 1741-1758. Extracts, circa 1819, from copies owned by John, 6th Earl Waldegrave.