An exercise book containing the original manuscript, 1932-1934, of the narrative poem, 'Branwen'; together with related drafts, 1931, including the 'Prologue to "The Death of Branwen"'; and the programme of a concert of verse, 27 July 1937, held at the Oxford Festival of Spoken Poetry, in which Wyn Griffith participated. The poem was published by J. M. Dent & Sons, [1934].

Manuscript and typescript copies, 1939-1940, of 'Branwen: a verse play for radio'; together with notes on Ernest Roberts, harpist of Bethesda, whom Wyn Griffith had visited with his father, November 1932.