Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mining School Britannia (booklet)
'Mining School Britannia. Pneumatic Picks for Coal-Getting by Messrs J. Shenton, M.E. and T. Powell, M.E. Powell Duffryn Colliery Officials' and Students' Association. Session 1939-40'. 27 page booklet.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.