Typescript study on the work of D.A.Thomas, Ychwanegu i'r clipfwrdd 1-10. Is-gyfres [c.1920]. Rhan oDavid Evans (Industrial Journalist) Papers,
Source materials relating to the career of D.A. Thomas, Viscount Rhondda, Ychwanegu i'r clipfwrdd 11-42. Is-gyfres 1894, Aug.-1919, April. Rhan oDavid Evans (Industrial Journalist) Papers,
Material written about D.A. Thomas, Viscount Rhondda, Ychwanegu i'r clipfwrdd 43-48. Is-gyfres [c.1918]. Rhan oDavid Evans (Industrial Journalist) Papers,