The contents are as follows: (i) ‘Connected narrative with extracts from the letters 1790-1815’ being a narrative of the military services of William Marshall's sons with copies and extracts of their letters to one another and their father, covering the years 1790 to 1815 (folio 1); (ii) ‘Letters written when on service, to his friends at home, by William Marshall, 1795-1818’ being transcripts and a few extracts of letters of William Marshall (subsequently Lieutenant-Colonel) to his father, brothers and sister (folio 100); (iii) ‘Letters and memorials of Captain John Marshall’, an incomplete collection of transcripts of letters of John Marshall 1803-1807 to his sister and his father (folio 261).

These typescripts were doubtless made by David J Mackenzie about the same time as, or shortly after the compilation of the contents of MS.15370: Volume of typed copies of letters and memoranda of Alexander Marshall.

There are leaves missing between folios 123-124, 150-151, 203-204 and 243-244.