- 17/8.
- Sub-series
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Llyfrgell Coleg Prifysgol Gogledd Cymru, Bangor.
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,
Mynegai i lawysgrif ym meddiant Syr John Williams, Plas, Llanstephan.
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Nodiadau a drafftiau darlithiau, erthyglau ac ysgrifau.
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Part of Papurau Bob Owen, Croesor,
Rhestri llawysgrifau yn naliadau Llyfrgell Genedlaethol Cymru.
Part of Papurau Bob Owen, Croesor,
Teipysgrifau.
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,
Y Bywgraffiadur Cymreig a Bob Owen.
Part of Papurau Bob Owen, Croesor,