Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Llanrwst Lead Mines Ltd., company records & docs.
Llanrwst Lead Mines Ltd., Parc Mine. General correspondence concerning Board Meetings, 1956-1957. 100 typed letters and memoranda contained within a green card file.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.