Llythyrau at Ddafydd Jones o Drefrico, wedi eu copïo a'u golygu gan G.J. Williams
Series: National Library of Wales Journal: Supplement. Series 3 -- no. 2; Cylchgrawn Llyfrgell Genedlaethol Cymru. Atodiad. cyfres 3, rhif 2; Cylchgrawn Llyfrgell Genedlaethol Cymru -- rhif 2
Published: 1943
Place of publication: Aberystwyth
Language: wel
Number of pages: 46
Notes: Front., app., notes.

Almost entirely in Welsh.