Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
South Wales coalfield, map
Geological Survey one-inch New Series solid edition sheets 229, 230, 246 and 247 (Swansea-Llanelli-Carmarthen area) mounted together, latter two are 1906 and 1907 eds, so all four are probably first eds of similar date. Colour printed on 36 pieces of paper backed onto linen. Folded into card covers.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.