Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Collection of maps, plans, drgs re iron & steel ind.
Plan of the surface Tram roads of the Blaenavon Iron and Coal Works showing the branches to the various mine and coal levels Garnddyrris - forge, limestone - quarries and sale coal yard Lanfoist.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.