Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
O.S. map of Monmouthshire and Brecknockshire
Ordnance Survey Map 1880 Monmouthshire Sheet XI.7 Brecknock Sheet XLVII.7 Brynmawr Scale 1/2500 being 25.344 inches to a statute mile or 208.33 feet to one inch
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.