'Rhostryfan. Hanesion o'r Dyddiau Gynt', being a typescript copy of stories of local characters written by W. Gilbert Williams, Rhostryfan, July, 1936, and based on their associations with four ruined buildings in the district, namely 'Y Castell', 'Pen y Gaerwen', 'Y Felin Frag', and 'Y Pwrws'.