The correspondence consists of the following:

(i) Letter, 1804, of the 7th Marquess of Tweeddale at Verdun (folio 1);

(ii) Letters and papers, 1815-1816, concerning the mental health of John Sharp of Chippenham Park, husband of the 8th Marquess of Tweeddale’s sister, Lady Hannah Charlotte (folio 5);

(iii) Letters, 1835-1853, of and concerning the Marquess of Dalhousie (folio 20);

(iv) Correspondence, 1839, concerning the marriage between Lady Elizabeth Hay and the 2nd Duke of Wellington, being largely letters of the 1st Duke of Wellington and the 8th Earl of Lauderdale (folio 52);

(v) Letters, 1844-1851, undated (but circa 1850-1855) of the 9th Marquess of Tweeddale to Lady Julia Hay (folio 117);

(vi) Various family letters, 1845-1854, to Lady Julia Hay (folio 250);

(vii) Letters, 1846-1866, of the 9th Marquess of Tweeddale to his parents (folio 255);

(viii) Miscellaneous family correspondence, 1811-1866, undated (folio 500).