'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'.

A copy of Pasiant yr Ysgol Sul, Rhostryfan, held 1 August 1929 and written by William Gilbert Williams, together with photographs of the several characters taking part.