J. L. Williams MP Papers,
J. L. Williams MP Papers,
J. Lamb Collection of Deeds,
J. Lamb Collection of Deeds,
J. M. Cronin: List of articles and historical notes
J. M. Cronin: List of articles and historical notes
J. M. Howell Manuscripts,
J. M. Howell Manuscripts,
J. M. Howell Papers,
J. M. Howell Papers,
J. M. Lewis Papers,
J. M. Lewis Papers,
J. M. Lloyd Thomas Papers,
J. M. Lloyd Thomas Papers,
J. M. Thompson notes on Wales,
J. M. Thompson notes on Wales,
J. Mansel Thomas Papers,
J. Mansel Thomas Papers,
J. O. Francis: The Beaten Track. Typescript copy, with some author's emendations. English. Between boards. Purchased from H. White Thomas ...,
J. O. Francis: The Beaten Track. Typescript copy, with some author's emendations. English. Between boards. Purchased from H. White Thomas ...,
J. P. Brown essays
J. P. Brown essays
J. P. Brown's 'Cylch translations'
J. P. Brown's 'Cylch translations'
J. R. Davies PhD thesis, 'The Book of Llandaf...'
J. R. Davies PhD thesis, 'The Book of Llandaf...'
J. R. Hughes Papers and Deeds,
J. R. Hughes Papers and Deeds,
J. R. Jones Papers
J. R. Jones Papers
J. Rees: Casgliad o hymnau wedi eu haddasu at addoliad cymdeithasol gyda ychwanegiadau llawysgrif.
J. Rees: Casgliad o hymnau wedi eu haddasu at addoliad cymdeithasol gyda ychwanegiadau llawysgrif.
J. Rhosydd Williams: Letter
J. Rhosydd Williams: Letter
J. Seymour Rees Collection
J. Seymour Rees Collection
J. T. Evans Manuscripts
J. T. Evans Manuscripts
J. T. Jones Manuscripts
J. T. Jones Manuscripts
