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 277,897 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.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
