[1-11] Poetry, and contributions to the Gentleman's Magazine, including Mitford's poetry commonplace books begun in 1796 and 1805, and his unsuccessful Oxford prize poem entry 'Palestine', 1803; verses on the 'Fifth Idyl of Moschus' by Anna Maria Wood; and 'Chateaubriand at Beccles... 1795', extracts from his memoirs.
[12-16] Sheets of MS, proofs with notes, of The correspondence of Thomas Gray, London, 1853; sample pages of Henry Reed, ed., The poetical works of Thomas Gray, Philadelphia, 1853; and transcripts of letters of Samuel Johnson (17 August 1782) and Sir Joshua Reynolds (15 December 1786 and 8 March 1791).
[17-43] Family letters, from John Mitford (father), 1801 (1); from Robert Mitford (brother), 1804-29, mostly from India (20); Robert Mitford to John Mitford (father), 1806 (1); and from John Mitford, 1st Baron Redesdale, 1814-24, on obtaining the livings of Weston and Stratford (4).
[44-71] Letters from others, on literary and general subjects, including James Boswell junior, 1820; John Britton, 1842; William Cotton, 1859 (2); Peter B. Long, 1858; Gaetano Polidori, 1842; E.C. Sandby, undated; J. Scoones, 1803-12 (3); Matilda Travers, 1838; Cecilia Tinkler, 1828; G.D. Whittington, 1808; and Emma C. Wood, c.1842 (7).
[72-78] Passports, passes to visit palaces, etc., 1816-22.
[79-82] Pamphlets: John Mitford (father), [letter to the Court of Directors of the East India Company on his suspension from service, refutation of charges made against him, and petition for restoration to a suitable post at Madras], 25 February 1799; Histoire de la Sainte Face de Notre Seigneur Jsus Christ, Laon, 1815; John Mitford, Remarks on the SINEPI [Greek capitals] or mustard-tree of Scripture, occasioned by a paper read at a meeting of the Asiatic Society, 1859; and part of a Sotheby's sale catalogue of prints, old master drawings, undated, marked with prices.
 'The Norfolk tour', MS, late 18th century.