Presentation titled 'Atgofion William John...
W J Roberts' death certificate, Bangor,...
Meillionen', Pant, Bethesda, Gwynedd
W.J. Roberts and M. M. Roberts, Penrhyn Quarry,...
A 'Biology' class at Ysgol y Sir,...
The site of Treflys Chapel, Gerlan, Bethesda,...
Ponc Twrch Office, Penrhyn Quarry, Bethesda,...
Ponc Leval Shed, Penrhyn Quarry, Bethesda,...
Vol.1 of a manuscript of the history of Penrhyn...
Vol.2 of a manuscript of the history of Penrhyn...
Vol.1 (transcription) of a manuscript of the...
Vol.2 (transcription) of a manuscript of the...
Index pages of a manuscript of the history of...
