Dilynwch Huw Evans i gorneli tywyllaf archif Radio Cymru, i ddarganfod Sesiynau Coll o ddyddiau cynharaf yr orsaf. Lost sessions from Radio Cymru's early days.
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Dilynwch Huw Evans i gorneli tywyllaf archif Radio Cymru, i ddarganfod Sesiynau Coll o ddyddiau cynharaf yr orsaf. Lost sessions from Radio Cymru's early days.