Mae'r gyfres yn cynnwys drafftiau o nofelau, straeon byrion a dramâu, ynghyd â rhyddiaith a cherddi amrywiol.

Eitemau printiedig, 1886-[1983], gan gynnwys cerdd goffa Myfyr Emlyn, 1886, i'r Parch. R. Hughes (1820-1885), Bethania, Maesteg; rhaglen, 1949, ar gyfer perfformiad Aelwyd yr Urdd, Aberystwyth, o 'Amser' (cyfieithiad Elsbeth Evans o J. B. Priestley, 'Time and the Conways') pan fu Norah Isaac yn actio rhan Eirian; y cylchgrawn Llwyfan, Gwanwyn 1969, yn cynnwys erthygl 'Y ddrama yn y Coleg Addysg' ganddi; rhaglen cyflwyniad teyrnged Theatr yr Ymylon i Saunders Lewis yn bedwar ugain oed yn [1973]; taflen angladd Aneurin Jenkins-Jones, 1981; a rhaglen gwasanaeth angladd Carwyn James, 1983.

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

Sgriptiau mewn teipysgrif: 'Ann y Wernolau', 1921, drama gan Mrs Teifi Jones, mam Idwal Jones, buddugol yn Eisteddfod Aberaeron (copi hefyd ymhlith Papurau Idwal Jones B/5), 'Kith and kin' sef comedi E. Eynon Evans, [1939]-[1946], ynghyd â 'Gwirionedd', drama un act mewn ffurf alegori, [1922], gan 'Seth' mewn llawysgrif.

Mae'r gyfres yn cynnwys llyfrau nodiadau cymysg yn cynnwys copïau llawysgrif a theipysgrif o ddramâu yn bennaf, ynghyd â rhai caneuon, storïau a beirniadaethau.

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.

Sgriptiau dramâu amrywiol, [?1929]-[2013] (gyda bylchau), gan gynnwys dramâu gwreiddiol, addasiadau o ddramâu, a dramâu a gomisiynwyd gan yr Eisteddfod Genedlaethol.

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.

Papurau Thomas Owen Jones (Gwynfor), [c. 1889]-1969, yn cynnwys gohebiaeth, llyfrau nodiadau, dyddiadur, dramâu, storiâu, cerddi, traethodau, sgyrsiau a darlithoedd, adroddiadau a thorion o'r wasg yn ymwneud â Gwynfor a byd y ddrama yng Nghymru, a chopïau o gerddi a anfonwyd ato gan Thomas Gwynn Jones (1871-1949), Robert Williams Parry (1884-1956), ac eraill; ynghyd â llythyrau at Madge Jones,1941-1969, ynglŷn â Gwynfor a'i waith. = Papers of Thomas Owen Jones (Gwynfor), [c. 1889]-1969, comprising correspondence, notebooks, a diary, plays, stories, poems, essays, talks and lectures, reports and press cuttings relating to Gwynfor and the drama movement in Wales, and copies of poems addressed to him by Thomas Gwynn Jones (1871-1949), Robert Williams Parry (1884-1956), and others; together with letters to Madge Jones, 1941-1969, concerning Gwynfor and his work.

Llythyrau, 1915-1936, yn bennaf at ei deulu tra bu'n gwasanaethu yn y fyddin, 1915-1919; teipysgrifau a llawysgrifau o'i ddramâu a sgriptiau radio, 1920-1936, a thorion papur newydd o adolygiadau, 1926-1940; barddoniaeth, caneuon, parodïau, rhyddiaith a deunydd arall, 1924-1932; copi teipysgrif o 'Ann y Wernolau',drama gan ei fam, Mrs Teifi Jones, 1921; a deunydd amrywiol a ychwanegwyd gan D. Gwenallt Jones tra bu'n ymchwilio ar gyfer Cofiant Idwal Jones, 1934-1957. = Letters, 1915-1936, mainly to his family whilst serving in the army, 1915-1919; typescripts and manuscripts of plays and radio scripts, 1920-1936, and newspaper cuttings of reviews, 1926-1940; poetry, songs, parodies, prose and other material, 1924-1932; a typescript copy of 'Ann y Wernolau', a play by his mother, Mrs Teifi Jones, 1921; and miscellaneous material added by D. Gwenallt Jones while researching Cofiant Idwal Jones, 1934-1957.

Derbyniwyd bocs ychwanegol o bapurau gan Mrs Eirain Rees (nee Jones), Medi 2008. Mae'r grŵp yn parhau heb ei gatalogio.

Papurau Jac Jones,1961-1970, yn cynnwys sgriptiau dramâu (comedïau yn bennaf) a gyfansoddwyd ganddo, rhaglenni rhai o'i ddramâu a berfformiwyd gan Gwmni Drama Cawdor, a'i nofel anorffenedig. = Papers of Jac Jones, 1961-1970, comprising scripts of plays (mostly comedies) composed by him, programmes of some of his plays which were performed by Cwmni Drama Cawdor, and an unfinished novel by him.

Mae'r fonds yn cynnwys yn bennaf llyfrau lloffion o doriadau papur newydd o golofnau ac ysgrifau John Ellis Williams, 1918-1975. Mae'r llyfrau lloffion hefyd yn cynnwys toriadau papur newydd eraill ynglŷn â'i gyfansoddiadau, gohebiaeth, rhaglenni cystadlaethau a gwyliau dramâu, ffotograffau a lluniau, a rhaglenni cyfarfodydd Seiri Rhyddion lleol, 1912-1974. Ceir hefyd ddrafftiau o ddwy gyfrol anghyhoeddedig, 1936 a [1973], a llun o Ellis Humphrey Evans ('Hedd Wyn'), a chopi o Cofarwydd, R. Silyn Roberts, 1930.

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.

Llythyrau at Morris Jones, 1933-1977, oddi wrth Saunders Lewis ac eraill; copïau llawysgrif a theipysgrif o ddramâu gan Saunders Lewis. Huw Lloyd Edwards, F. Sladen-Smith ac Ieuan Griffith, a chyfieithiadau o ddramâu Shakespeare gan J. T. Jones, Porthmadog,[1934]-[1968]; posteri ar gyfer dramau a berfformiwyd gan Gwmni Garthewin neu yn Theatr Garthewin,1946-1958; cynlluniau mewn dyfrlliw a phensil o wisgoedd a setiau, [1948]-[1959]; cynlluniau llwyfan,[1968]; ffotograffau o berfformiadau, [c. 1947]-[c.1980]; tocynnau, raglenni ac effemera arall, 1946-1977; gohebiaeth ynglŷn â'r theatr a'r cwmni,1946-1954; llyfrau cofnodion, 1949-1989 (ynghyd â nodyn, 1994); papurau ariannol,1946-1985; papurau cyffredinol,1946-1971; torion papur newydd,1946-1977; a rhaglenni'n ymwneud â chwmnïau theatrig eraill,1947-1984 = Letters to Morris Jones, 1933-1977, from Saunders Lewis and others; manuscript and typescript copies of plays by Saunders Lewis, Huw Lloyd Edwards, F. Sladen-Smith, and Ieuan Griffith, and translations of Shakespeare plays by J. T. Jones, Porthmadog, [1934]-[1968]; posters of plays performed by Cwmni Garthewin or at Theatr Garthewin, 1946-1958; watercolour and pencil designs of costumes and sets, [1948]-[1959]; stage plans, [1968]; photographs of performances, [c.1947]-[c.1980]; tickets, programmes and other ephemera, 1946-1977; correspondence concerning the theatre and company, 1946-1954; minute books, 1949-1989 (with a note, 1994); financial papers, 1946-1985; general papers, 1946-1971; newspaper cuttings, 1946-1977; and programmes relating to other theatre companies, 1947-1985.

Sgriptiau dramâu a lwyfanwyd gan fyfyrwyr a chwmnïau drama dan adain Norah Isaac, gan gynnwys 'Priodas waed', [1965], 'Corlannu pobl', 1983, a 'Y Penadur', 1990. Y mae'r mwyafrif ohonynt yn waith gwreiddiol ganddi a'r gweddill yn sgriptiau gan eraill. Ceir hefyd gopi o Gwaith Thomas Edwards (Twm o'r Nant) (Lerpwl, [1874]).

Mae'r grŵp hwn yn cynnwys wyth o wahanol sgriptiau ar gyfer plant ac oedolion, yn waith gwreiddiol ac yn gyfieithiadau, 1988-1994.

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].

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.

First draft, June-July 1968, of Saunders Lewis's radio play, 'Y Cyrnol Chabert', based on a story by Honoré de Balzac. First broadcast on BBC Radio 4 Wales, 19 December 1968, and repeated on 13 March 1970. The play was published in 1989.