Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Bonvilles Court Area, Timber Seam, plan
Plan: Timber seam, Bonville's Court Colliery, and including Moreton Colliery. 6":1m, not dated. Pemb XXXV.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.