Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
British Steel Corporation, letterhead
Full title - British Steel Corporation, Dowlais Works, Merthyr Tydfil.
Letterhead, - dated 22 July 1976
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.