Supplementary correspondence and papers of Lieutenant-General William Murray, formerly Foxlowe (d. 1818), are arranged in four series. They include correspondence and papers of his wife, the Hon. Mary Murray (d. 1803), daughter of Lord John Murray.
- BAG/18/1: Personal correspondence, 1782-1817, 2 subseries, 38 items;
- BAG/18/2: Personal papers and accounts, 1782-1820, 2 subseries, 79 items;
- BAG/18/3: Military correspondence and papers, 1782-1815, 15 items;
- BAG/18/4: Hon. Mary Murray (d. 1803): correspondence and papers, 1780-89, 8 items.
See BAG/6 above for the main correspondence and papers of Lieutenant-General William Murray, formerly Foxlowe (d. 1818).