Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mining School Britannia (booklet)
'Mining School Britannia ''Economies in Mining'' by Messrs S.G. Bassett, G.D. Corfield and M. Hughes. Powell Duffryn Colliery Officials' and Students' Association. Session 1936-37'. 12 page booklet.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.