J. D. Richards Manuscripts,
J. D. Richards Manuscripts,
J. D. Williams papers.
J. D. Williams papers.
J. Dyfnallt Owen papers relating to Brittany
J. Dyfnallt Owen papers relating to Brittany
J. E. Caerwyn Williams: Papurau Y Traethodydd, &c.
J. E. Caerwyn Williams: Papurau Y Traethodydd, &c.
J. E. Griffith Manuscripts
J. E. Griffith Manuscripts
J. E. Powell Papers
J. E. Powell Papers
J. E. Thomas: The Highest Interests of Wales
J. E. Thomas: The Highest Interests of Wales
J. F. Smith Collection of Flintshire and Denbighshire Deeds,
J. F. Smith Collection of Flintshire and Denbighshire Deeds,
J. Fielding: Notes on Rhyl
J. Fielding: Notes on Rhyl
J. G. Caulett: Notes on pharmacopoeia
J. G. Caulett: Notes on pharmacopoeia
J. Glyn Davies Papers,
J. Glyn Davies Papers,
J. Glyn Picton Papers,
J. Glyn Picton Papers,
J. Glyndyrus Williams Music MSS,
J. Glyndyrus Williams Music MSS,
J. Gwenogvryn Evans Family Papers,
J. Gwenogvryn Evans Family Papers,
J. H. Davies, Cwrt Mawr, papers
J. H. Davies, Cwrt Mawr, papers
J. Harvey Bloom: Incriptions and epitaphs
J. Harvey Bloom: Incriptions and epitaphs
J. Haulfryn Williams Papers,
J. Haulfryn Williams Papers,
J. Hobson Matthews manuscripts
J. Hobson Matthews manuscripts
J. Jones-Williams Collection of Deeds,
J. Jones-Williams Collection of Deeds,
J. L. Killey Papers,
J. L. Killey Papers,
