Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
The National Industrial Development Council of Wales & Mon., map
Map by D.T. Williams showing location of collieries - 1935; steel, tinplate and other industries - 1936, in South Wales.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.