Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Tredomen Engineering Works, eng.drawings & docs.
Willison coupler with steel spring draftgear, engineering drawing Scale 1:4 , English Steel Castings Corporation Ltd., Sheffield, 1962
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.