| Description | Two copies of 'The Sentence in Welsh', delivered by Henry Lewis as the Sir John Rhys Memorial lecture, and published in The Proceedings of the British Academy, volume XXVIII /
Dau gopi o 'The Sentence in Welsh', traddodwyd gan Henry Lewis fel Darlith Goffa Syr John Rhys, a chyhoeddedig yn The Proceedings of the British Academy, volume XXVIII
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