Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Mardy Colliery (booklet)
Full title - Mardy Colliery No. 4 (Aberdare) Area South Western Division National Coal Board. 8 page booklet stapled at centre.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.