Casglu sy'n cael sylw John Hardy ar yr ymweliad hwn â'r archif. John Hardy focuses on collecting on this visit to the Radio Cymru archive.
Discover 11,128,835 listings and 277,877 playable programmes from the BBC
Casglu sy'n cael sylw John Hardy ar yr ymweliad hwn â'r archif. John Hardy focuses on collecting on this visit to the Radio Cymru archive.