Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Mining Magazine (booklet)
'Ystrad Mynach College of Further Education Mining Society. The Mining Magazine. Session 1968-69. Volume 10'. 44 page booklet.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.