Cerdd dafod sef celfyddyd barddoniaeth Gymraeg, gan John Morris-JonesJones, John Morris (Sir) · First published 1930Open the Tome
Llawysgrif HendregadreddJohn Morris-Jones, Parry-Williams, T. H. Sir · First published 1933Open the Tome
Elementary Welsh grammarMorris-Jones, John Sir · First published 1922 · Latest edition 1926Open the Tome
A Welsh grammar, historical and comparativeJones, John Morris Sir · First published 1913Open the Tome
