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Amgueddfa Cymru – Museum Wales
Llun-gopi o gasgliad o bosau wedi'u cofnodi oddi ar lafar. (Lluniwyd ar gyfer cystadleuaeth arbennig i ysgolion cynradd ac uwchradd yn Eisteddfod Talaith a Chadair Powys, Croesoswallt). (gw. Llsgrau. 3500/1-11)
