Correspondence,
Correspondence,
Cymdeithas Lenyddol y Gerlan, Bethesda,
Cymdeithas Lenyddol y Gerlan, Bethesda,
Extracts from public records, etc.,
Extracts from public records, etc.,
Letters and papers relating to the Reverend Peter Williams,
Letters and papers relating to the Reverend Peter Williams,
Letters to John Jones ('Myrddin Fardd'), etc.,
Letters to John Jones ('Myrddin Fardd'), etc.,
Literary correspondence,
Literary correspondence,
Llythyrau at H. Cernyw Williams,
Llythyrau at H. Cernyw Williams,
Press cuttings and letters,
Press cuttings and letters,
Welsh books on doctrinal matters, etc.,
Welsh books on doctrinal matters, etc.,
