Llungopïau o bapurau'n ymwneud â John Murray Thomas (1847-1924) a ychwanegwyd at y rhai a roddwyd gan Olivia Hughes de Mulhall ym mis Medi 1975; yr oedd John Murray Thomas o Ferthyr Tudful yn wreiddiol ac ymfudodd i'r Wladfa ar y Mimosa gyda'r fintai gyntaf yn 1865. Casglwyd y papurau ynghyd gan Olivia Hughes de Mulhall, gwraig ei ŵyr, tra'n gweithio ar ei llyfr John Murray Thomas: pequeño hombre pero gran héroe para la historia de Chubut (Trelew, 1999), gydag adolygiadau, 2000, ohono. Ymhlith y papurau ceir rhannau o'i ddyddiaduron, 1877, 1878 ac 1893; ei gynllun o Gwm Hyfryd, 1885; ei ohebiaeth, 1888-1911, gan gynnwys deiseb a luniwyd ganddo, 1893, ynglŷn â hawliau tir; pedwar llythyr gwreiddiol at John Murray Thomas, 1895-1898, a chytundeb busnes gwreiddiol, 1893. Ceir papurau hefyd yn ymwneud â'i thad y bardd Morris ap Hughes, gan gynnwys enghreifftiau o'i farddoniaeth fel 'Cerdd ymson wrth feddrod Eluned [Morgan]' a 'Gwyl y Glaniad' mewn Sbaeneg; a chyfieithiadau o emynau adnabyddus Cymreig i'r Sbaeneg gan ei fab Osian Hughes, Eisteddfod Chubut 1988

Llungopïau o lythyrau, 1995-1996, a anfonwyd gan Glenys Goossens, Canada, at berthnasau yn Abergele yn rhoi gwybodaeth achyddol am ei thad William Edward Thomas (1895-1995), ŵyr i Robert a Catherine Davies, Llandrillo, a ymfudodd i Batagonia ar y 'Mimosa' yn 1865; ynghyd â llungopïau a chyfieithiadau o erthyglau, llythyrau, etc, yn ymwneud â chorff a ddarganfuwyd ar draeth Port Madryn yn 1995 a'r ymgais i geisio profi mai corff Catherine Davies ydoedd. / Photocopies of letters, 1995-1996, sent by Glenys Goossens, Canada, to relatives in Abergele containing genealogical information concerning her father William Edward Davies (1895-1995), grandson of Robert and Catherine Davies, Llandrillo, who emigrated to Patagonia in 1865 aboard the 'Mimosa'; together with photocopies and translations of press cuttings, correspondence, etc, relating to human bones discovered near Port Madryn in 1995, alleged to be the remains of Catherine Davies.

Papers, 1967-1969, mainly comprising travel documents and correspondence, relating to Kyffin Williams's visit to Patagonia. Also included are typescript notes relating to Patagonia, [?1961x1962], belonging to John Ormond and used by him in preparation for his visit to the region to film 'The desert and the dream' (1962). These notes, which include an annotated script of the film, appear to have been given to Kyffin Williams, together with a holograph poem by John Ormond, 'Instruction to settlers', 1967, prior to his trip. In addition, the file includes a copy of the journal Argentina, vol. 4, no. 4 (April 1963), which contains an article entitled 'The desert and the dream'; a list of contacts in Patagonia, [1968], prepared by Valmai Jones in readiness for Kyffin Williams's visit; typescript questions and answers prepared before, or possibly at the beginning of, his visit; and a catalogue of the 'Photographs of Patagonia' exhibition at Oriel Môn, 1982, with photocopies of drawings contained in an album. The file also contains a photocopy of the book Tan tro nesaf by Gareth Alban Davies (Llandysul, 1976), which includes the titles of pictures by Kyffin Williams to be inserted in the work.

Photocopies of sermons, in Welsh, 1869-76, delivered at churches in Bangor and Dwygyfylchi by the Reverend Hugh Davies ('Hywel Ddu o Arfon', d. 1909), who emigrated to Patagonia in 1883 and was a Welsh Chaplain in the Chubut Colony (cf. NLW MS 23383B); and of the diary, 1909-10, of his son Robert Llywelyn Davies (b. 1878), Chubut.

Sermons and sermon notes in Welsh by the Rev. Ben Davies; a printed sermon Y Gwyr Ieuainc, Pregeth gan y Parch. Ben Davies, Pantteg. Traddodwyd ar gais Cyfarfod y Bobl Ieuainc Nos Sul, Rhagfyr 3, 1922; and two letters, to and from Ben Davies, written during a preaching tour in Patagonia, 1923-1924.

Papers of and acquired by R. Bryn Williams, mainly relating to the Welsh settlement in Patagonia, including a diary of Joseph Seth Jones, one of the first wave of emigrants on the Mimosa to Patagonia, 1865, and correspondence, 1865-1868; correspondence of his brother, Robert Charles Jones, 1867-1877; copy records of the Welsh courts in Y Wladfa, 1872-1881; letters and minute books relating to Vrondeg Baptist Chapel, 1875-1887, Gaiman, 1877-1891, Eglwys Llanddewi, 1891, Eglwys Bryn Gwyn and Cyfarfod Misol Y Wladfa (Calvinistic Methodists), 1881-1955; papers relating to the Centenary Celebrations of the Welsh settlement in Patagonia, 1952-1962; letters from the founders of the Welsh colony, 1866, and from others who had experienced life there; letters to R. Bryn Williams from Patagonia and from Wales relating to Patagonia, [c. 1941-1961]; research notes and manuscripts of books and radio plays by R. Bryn Williams, 1942-1962; miscellaneous records relating to Wales and elsewhere collected by Williams, 1865-1962; papers relating to John S. Williams, 1901-1962; papers and press cuttings on the history, culture and industry of Patagonia, 1869-1962; and typescripts of published and unpublished works, lectures, scripts, etc.

Llungopïau gan gynnwys erthygl 'Mynwent Rawson' gan R. J. Berwyn (1863-1917) ar gyfer Y Drafod; tystysgrif geni, 1912,yn Sbaeneg, y plentyn cyntaf a anwyd yn y Wladfa yn 1865 yn dwyn llofnod 'RJB'; a dau lythyr, 1912 a heb ddyddiad, oddi wrth R. J. Berwyn at aelodau o'i deulu. / Photocopies including an article 'Mynwent Rawson' by R. J. Berwyn (1863-1917) for Y Drafod; a birth certificate, 1912, in Spanish, of the first child born in the Welsh Colony, Patagonia, 1865, bearing the signature of 'RJB'; and two letters, 1912 and undated, from R. J. Berwyn to members of his family.

A volume containing photocopies of press articles from Patagonian newspapers, on the life and career of Germán 'Loly' Roberts, an athlete of Welsh descent.

A copy of William Iain Stevenson's MA thesis, 'The role of symbol and myth in the Welsh settlement of Patagonia, 1865-1911' (Simon Fraser University, Canada, 1974).

A copy of Maria Teresa Agozzino's Senior Honours thesis 'Transplanted Traditions: An Assessment and Analysis of Welsh Folklore in Patagonia' (University of California, Berkeley, 1999).

Llungopïau o 'Ychydig am y Wladfa Gymreig yn Patagonia' sef hanes [?Edward Cox] a aeth i'r Wladfa yn 1886 yn bedair ar ddeg mlwydd oed ar y llong 'Mozart' o Lerpwl gyda'i chwaer hŷn. Yr oedd Llwyd ap Iwan ymhlith ei gyd-deithwyr. Dychwelodd i Gymru yn 1896. Disgrifir y daith yno ac yn ôl yn fanwl, ar ffurf dyddiadur weithiau. Adroddir am y brodorion, byd natur a'i waith yn cneifio miloedd o ddefaid. Cyhoeddwyd y gwaith yn Yr Arwydd, papur bro gogledd-ddwyrain Sir Fôn, Mawrth, Mai, Gorffennaf, Medi a Hydref 1995

Papers of E. R. Williams, mainly relating to chapels , schools and eisteddfodau in Patagonia, 1933-1951, and papers of Elizabeth Jeane Roberts Williams, mainly school notebooks, 1945-1949.

Copi yn llaw Watkin William Pritchard Williams, Nueva Imperial, Chile, [?1890au], o rannau o'i ddyddiaduron ar gyfer y blynyddoedd 1889 a 1891. = A transcript by Watkin William Pritchard Williams, Nueva Imperial, Chile, [?1890s], of parts of his diaries for the years 1889 and 1891.
Mae'r dyddiaduron yn cynnwys hanes, [2]-5 Rhagfyr 1889, taith ar fwrdd agerlong i Concepción, y brifddinas ranbarthol, i gyfarfod gyda swyddog mewnfudo (ff. 1-3 verso, 4 verso), a dyddiadur yn cofnodi bywyd bob dydd ar y fferm deuluol yn Nueva Imperial, 17 Awst-16 Hydref 1891 (ff. 5-16 verso). Ceir cyfieithiadau o'r dyddiaduron i'r Saesneg (heblaw am f. 11 recto-verso) yn Huw Watkin Williams, The Watkin Path to Patagonia (Castell-nedd, 2006), tt. 97-101, 105-119. Ceir nodiadau ynglŷn â Phatagonia mewn Sbaeneg, a hynnu mewn llaw wahanol, ar f. 4 (testun â'i wyneb i waered). = The diaries comprise an account, [2]-5 December 1889, of a trip on board a steamship to the regional capital, Concepción, to meet with the immigration supervisor (ff. 1-3 verso, 4 verso), and a diary detailing everyday life on the family farm at Nueva Imperial, 17 August-16 October 1891 (ff. 5-16 verso). English translations of the diaries (f. 11 recto-verso excepted) can be found in Huw Watkin Williams, The Watkin Path to Patagonia (Neath, 2006), pp. 97-101, 105-119. There are also notes on Patagonia in Spanish, and in a different hand, on f. 4 (inverted text).

Nodiadau ar ymweliad Ben Davies â De America yn 1923-1924, erthyglau yn y Drafod, 1924, a phapurau eraill, heb ddyddiad arnynt, a phenillion yn gyflwynedig i Ben Davies ar ei ymweliad â'r Wladfa gan Llewelyn Williams, Trelew, 1924.

Nodiadau, rhaglenni, taflenni, a chyfnodolion Cymraeg a Saesneg, 1965, a grynhowyd gan Dr Marshall Lloyd, yn ymwneud â'i ymweliad â Phatagonia ar achlysur dathlu canmlwyddiant Y Wladfa Gymreig. = Notes, pictures, programmes, leaflets, and Welsh and Spanish periodicals, 1965, accumulated by Dr Marshall Lloyd, relating to his visit to Patagonia during the centenary celebrations of the founding of Y Wladfa, the Welsh colony.

Cyfansoddiadau Clydwyn Ap Aeron Jones, (1913-1998), gan gynnnwys ei drefniant o 'Ar hyd y nos' a chaneuon mewn Sbaeneg, ynghyd â'i curriculum vitae, 1942-1980, a rhaglenni cyngherddau Côr Unedig Chubut y bu'n ei arwain.

Dyddiadur T. Llew Jones ar gyfer 1970, sy'n cynnwys cofnodion yn ymwneud â'i ddiddordebau a'i fywyd bob dydd. = Diary of T. Llew Jones for 1970, giving an account of his daily life and interests.
Cynhwysa'r gyfrol gyfeiriadau at Dic Jones (passim); Alun Cilie (passim); John Alun Jones (passim); cystudd Waldo Williams (f. 120); nofel gan Islwyn Ffowc Elis (passim); ac at gystadlaethau gwyddbwyll Iolo Ceredig Jones, gan gyfeirio at hefyd gyfeiriadau at Ysgol Gynradd Coed-y-bryn, Llandysul (passim) ac at apêl er budd Patagonia (ff. 156, 158). = The volume contains references to Dic Jones (passim); Alun Cilie (passim); John Alun Jones (passim); Waldo Williams's illness (f. 120); a novel by Islwyn Ffowc Elis (passim); and to Iolo Ceredig Jones' participation in chess tournaments; with references also to Coed-y-bryn Primary School, Llandysul (passim) and an appeal in aid of Patagonia (ff. 156, 158).