The contents are as follows:

(i) Legal papers, 1764-1769, of the 5th Marquess of Tweeddale (folio 1);

(ii) Legal and financial papers, 1762-1787, of the 6th Marquess of Tweeddale and Major William Hay (folio 37);

(iii) Papers, 1771-1782, concerning Scottish peerage elections (folio 144);

(iv) Papers, 1745-1784, concerning East Lothian county affairs - chiefly the poor and the repair of highways (folio 161).