Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Treforgan Colliery (booklet)
content summary - details of the Treforgan Drift Mine Red Vein development. Five pages, stapled.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.
Amgueddfa Cymru
content summary - details of the Treforgan Drift Mine Red Vein development. Five pages, stapled.