Copïau o lythyrau oddi wrth Eluned Morgan, Y Wladfa, Patagonia at 'John'. Rhoddwyd gan Mrs Mairos Ilma H. de Thomas, Gaiman ...,
David Jones letters to Tom Burns
David Lloyd George notebook
Day book of Thomas Jones, Pencerrig
Diary of a nurse
Diary of Thomas Davenport Twist,
Diary, etc., of John Davies, Ystrad
East Denbighshire Recruiting Committee minutes,
Edward Thomas letters to O. M. Edwards
Ellis Humphrey Evans (Hedd Wyn): Barddoniaeth
Fifteen views illustrative of a tour to Hafod in Cardiganshire
First World War diary
First World War papers,
History of the Gwydir family,
Horae
Letter,
Letters addressed to H. Tobit Evans (1844-1908), Llanarth from Michael D. Jones and others, relating to the Welsh Colony in ...,
Letters to Abraham Ortelius,
Lewis Morris' De Historia Piscium
Llanrhystyd Soldiers Fund papers,
