- 57-62.
- Sub-series
- [c.1889-1891]-1941.
Part of Papurau Gwynfor
Part of Papurau Gwynfor
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Llawysgrifau Evan James
Part of Papurau Ap Nathan
Part of Papurau Alwyn D. Rees,
Part of Papurau Alwyn D. Rees,
Part of Papurau Thomas Gwynn Jones
Adysgrifau o weithiau mewn Gwyddeleg,
Part of Papurau Thomas Gwynn Jones
Adult School Lesson Handbooks,
Part of Archif Plaid Cymru,
Part of Archif Plaid Cymru,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Achos yr Athro G. A. Dirac, Adran y Fathemateg Bur.
Part of Papurau Alwyn D. Rees,
Part of Papurau Alwyn D. Rees,
Part of Archifau Urdd Gobaith Cymru