Date range: 15th, 18th and 19th centuries.
Over 130 items, in English and Irish.
The sole fifteenth-century manuscript is a valuable Materia Medica, based on Latin herbal dictionaries (Irish ms 35).
The remainder of the collection consists primarily of literary (Fenian and Ossianic tales and poems), historical, genealogical and grammatical works from the library of the Irish scholar Denis Henry Kelly (1797–1877), which were purchased by the 25th Earl of Crawford in 1875.
There are numerous transcripts by well-known nineteenth-century scholars of important manuscripts, which were formerly in the Royal Irish Academy but are now lost.
- Unpublished list.
- The Materia Medica is described in N.R. Ker, Medieval Manuscripts in British Libraries, III, Lampeter - Oxford (Oxford, 1983), pp. 456-8.