Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The Cumberland Coalfield (leaflet)
Content summary - information on the history, reserves and prospects of the Cumberland coalfield. One sheet folded. Blue cover. Undated.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.