Traddodwyd y ddarlith = Lecture delivered at: Ysgol Bro Lleu, Penygroes, 14/10/1993.
Dwyn mae cof _ by Meirion Parry. Published by Cyngor Sir Gwynedd, Adran Diwylliant a Hamdden in 1994. Publication and catalogue information, links to buy online and reader comments.