Mae'r gyfres yn cynnwys gwybodaeth am nifer fawr o awduron enwog eu cenhedloedd a'u gwledydd, enghreifftiau o'u gwaith a chyfieithiadau ohonynt, wedi eu trefnu yn ffeiliau gweinyddol ac yn ffeiliau yn ymwneud â chenhedloedd unigol. Y gwledydd a'r diwylliannau a gynrychiolwyd yn y gynhadledd oedd: Gwlad y Basg, Catalunya, Denmarc, Estonia, Ffrisia, Galicia, Georgia, Groeg, Gwlad yr Iâ, Norwy, Romansch, Sorbia, Sri Lanka, Tsiecolofacia. Hefyd estynwyd gwahoddiadau i Hwngari, Yr Iseldiroedd, Iwgoslafia, Kenya, Nigeria a Romania.

Some sixty-five letters and postcards in Spanish and French, 1985-2010, to Ned Thomas from his friend the Basque nationalist Jose-Luis Alvarez Enparantza (Txillardegi, 1929-2012) (ff. 1-109, 111-112), together with a copy of Thomas's letter to Txillardegi, 8 November 2010 (f. 110).
The letters concern political, cultural and personal matters; one letter, dated 8 December 1989, concerns the paramilitary attack on Basque politicians at the Hotel Alcalá, Madrid, on 20 November, in which he was one of the targets (f. 3).

Papers, 1986-2012, relating to Jose-Luis Alvarez Enparantza (Txillardegi), including a pamphlet of Basque poetry (with translations into French, Spanish, Italian and English), [?1984]; a copy of the journal Coleg Cymraeg, Rhif 1 (1986), including Ned Thomas's interview with Txillardegi (in Welsh translation); cuttings from seven Basque and Spanish newspapers, 2000-2010, sent by Txillardegi to Thomas; Thomas's obituary of Txillardegi from the Independent, 31 January 2012; and the text of Thomas's 'Three Days in January' as published in Planet, Spring 2012.