The Social History of the Welsh Language Series ‘Eu Hiaith a Gadwant’?: Y Gymraeg yn yr Ugeinfed Ganrif ‘Let’s Do Our Best for the Ancient Tongue’: The Welsh Language in the Twentieth Century Gwnewch Bopeth yn Gymraeg: Yr Iaith Gymraeg a’i Pheuoedd 1801–1911 Iaith Carreg fy Aelwyd: Iaith a Chymuned yn y Bedwaredd Ganrif ar Bymtheg Language and Community in the Nineteenth Century Miliwn o Gymry Cymraeg!: Yr Iaith Gymraeg a Chyfrifiad 1891 Statistical Evidence relating to the Welsh Language 1801–1911 The Effects of Tourism on the Welsh Language in North-West Wales The Welsh Language and its Social Domains 1801–1911 The Welsh Language and the 1891 Census The Welsh Language before the Industrial Revolution Yn yr adran hon Cyfres Beirdd y Tywysogion Hanes Cymdeithasol yr laith Gymraeg Iolo Morganwg and the Romantic Tradition in Wales 1740-1918 J. E. Caerwyn and Gwen Williams Memorial Lectures Other Publications T. H. Parry-Williams Memorial Lectures The Visual Culture of Wales Project - Main Series