Man, Myth and Museum Iorwerth C. Peate and the Making of the Welsh Folk Museum Wiliam Eurwyn Heftet / 2023 / Engelsk
Llyfrau Llafar Gwlad: 78. Celfi Bryn-mawr - Arbrawf Cymdeithasol y Crynwyr 1928-40 Wiliam Mary Heftet / 2010 / Walisisk
