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Amgueddfa Cymru – Museum Wales
Traethawd buddugol yn Eisteddfod Genedlaethol Caerdydd, 1960, a luniwyd gan Y Parch William Phillips (Bangor) gyda'r teitl 'Casgliad heb ei wobrwyo o'r blaen, o dermau'n ymwneud a chrefftau neu a diwydiannau mewn unrhyw ardal, wedi eu codi oddi ar lafar wlad' sy'n trafod ardal Rhosllanerchrugog.