Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Letter to Thomas Williams & Sons
Black print on white paper with typed details in black ink. Letter from the British Boiler Fluid & Engineering Stores Co., Contractors to H.M. Government and London County Council, to Thomas Williams & Sons, Llangennech re. "Dejecoline" boiler scale-removing fluid. Not dated.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.