Manuscript of an untitled four act play by Owain Llewelyn Owain, depicting the lives of the quarrymen of Caernarvonshire during the early twentieth century.

A manuscript copy, with corrections, of an apparently unpublished one act play, [?1930s], by William John Davies (Gwilym Peris) entitled 'Y llestr gwanaf', depicting the plight of an unmarried mother in conflict with nonconformist values.

A manuscript copy, in several hands, of Oswald Rees Owen, Siop Morgan (Denbigh, 1937), a translation of Boyd's Shop (1936), a play by St John Ervine, first performed at the Pavilion Theatre, Rhyl, October 1936.

Sgript o'r ddrama lwyfan Sŵn y Malu, [1980]. = A script of the play Sŵn y Malu, [1980].

Papurau Meic Povey, 1966-2008, yn cynnwys sgriptiau, 1969-2007; llyfrau nodiadau, 1988-2005; astudiaethau o'i waith, 1988-[1999]; deunydd printiedig, 1968-2007; rhaglenni theatr, 1966-2008; a pheth gohebiaeth, 1968-2008. = Papers of Meic Povey, actor and dramatist, comprising scripts, 1969-2007; notebooks, 1988-2005; studies of his work, 1988-[1999]; printed material, 1968-2007; theatre programmes, 1966-2008; and some personal and work-related correspondence, 1968-2008.

Papurau Gwenlyn Parry, [1962]-1993, yn cynnwys sgriptiau a phapurau amrywiol yn ymwneud â'i ddramâu llwyfan, [1966]-1992, a'i ddramâu teledu, radio a ffilm, [1966]-[1991]; papurau'n ymwneud ag addasiad teledu Gwenlyn Parry ac Endaf Emlyn o nofel Caradog Prichard, Un Nos Ola Leuad, [1966]-1991; sgriptiau gweithiau gan eraill, [1966]-1991; papurau amrywiol yn ymwneud â'i waith, megis rhageiriau ac erthyglau, 1968-[1991]; deunydd printiedig, 1962-1991; a phapurau personol a theyrngedau, 1962-1993. = Papers of Gwenlyn Parry, [1962]-1993, comprising scripts and various papers relating to his stage plays, [1966]-1992, and television and radio dramas, [1966]-[1991]; papers relating to Gwenlyn Parry and Endaf Emlyn's television adaptation of Caradog Prichard's novel Un Nos Ola Leuad, [1966]-1991; scripts of works by others, [1966]-[1991]; various work-related papers, such as prefaces and articles, 1968-[1991]; printed material, 1962-1991; and personal papers and tributes, 1962-1993.

Cyfansoddiadau amrywiol a gyflwynwyd i gystadlaethau llenyddol a cherddorol Eisteddfod Genedlaethol Cymru, 1887-2019. Yn eu plith ceir awdlau, pryddestau, cywyddau, englynion, englynion ysgafn, baledi, sonedau, straeon byrion, blogiau, llên meicro a dramâu. Ceir gweithiau ar gyfer y Fedal Ryddiaith, Gwobr Daniel Owen, Ysgoloriaethau Emyr Feddyg a Geraint Morris, ynghyd ag emyn-donau a chyfansoddiadau Tlws y Cerddor a chyfansoddi dawns. Cyflwynwyd cystadlaethau i ieuenctid a chystadleuaeth y gadair a thlws rhyddiaith i ddysgwyr ac i'r rhai sydd wedi byw yn y Wladfa ar hyd eu hoes. = A variety of literary and musical compositions entered at National Eisteddfodau, 1887-2018, including odes and poetry in free metre, ballads, short stories, blogs, micro literature and plays. Entries for the Prose Medal, Daniel Owen Memorial Prize, Emyr Feddyg and Geraint Morris Scholarships, together with musical compositions such as the Musicians' Medal, hymn-tunes and dance composition are also included. Competitions for young people, Welsh learners including a chair and prose competition and a competition for those who have lived in Patagonia throughout their lives have been introduced.