- 28/29-36.
- Sub-series
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Gohebiaeth dramor at Bob Owen.
Part of Papurau Bob Owen, Croesor,
Rhai yn anuniongyrchol, a llythyrau trosglwyddo gyda hwy.
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Ysgrifau (gan mwyaf) a beirniadaeth.
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Gohebiaeth gyffredinol, A-J (Jones, Ithon).
Part of Papurau Bob Owen, Croesor,
Trefnwyd yn nhrefn yr wyddor, A-J (Jones, Ithon).
Gohebiaeth gyffredinol, J (Jones, J.)-Y.
Part of Papurau Bob Owen, Croesor,
Trefnwyd yn nhrefn yr wyddor.
Nodiadau a drafftiau darlithiau, erthyglau ac ysgrifau.
Part of Papurau Bob Owen, Croesor,
Llyfrgell Coleg Prifysgol Gogledd Cymru, Bangor.
Part of Papurau Bob Owen, Croesor,