Hanes cyfarfodydd cystadleuol Sir Gaernarfon,
A typescript essay, written for the National Eisteddfod held at Bangor in 1931, on the history of competitive and literary meetings in Caernarvonshire, by 'Gildas'.
'Gildas' (pseudonym).
Undeb Llenyddol a Cherddorol Rhostryfan a Rhosgadfan,
Two rough notebooks of J. R. Williams, Rhosgadfan, containing minutes, memoranda, and accounts of 'Cylchwyl Undeb Llenyddol a Cherddorol Rhostryfan a Rhosgadfan', 1896. Inset are a carol and other verses; typescript and printed balance sheets, 1911, 1918; and an undated holograph letter from the secretary H. S. Hughes, Rhostryfan.
Williams, J. R., Rhosgadfan