File contains papers relating to the campaign for a Welsh Language Act including; statements issued by the Secretary of State for Wales, press releases, statements by organisations such as the Welsh Consumer Council and the CBI, plans for campaigning and lobbying, copies of amendments to the Bill, some correspondence, Parliamentary committee reports, a speech (possibly given by Lord Gwilym Prys-Davies), representations on the Bill from Cefn and Rhieni Dros Addysg Gymraeg and newspaper cuttings.

Papers relating to the campaign for a Welsh Language Act in the 1980s including; copies of ministerial statements, Parliamentary questions, notes on a draft Act sponsored by Dafydd Wigley MP and Lord Gwilym Prys-Davies, correspondence, press releases, papers prepared by Cymdeithas yr Iaith Gymraeg and Urdd Gobaith Cymru, examples of a lack of Welsh language services available to the public, the status of Welsh in the Education Reform Act 1988, minutes and agendas of Gweithgor Deddf Newydd yr Iaith Gymraeg (New Welsh Language Act Working Group), statistical information, correspondence regarding the effect of the Race Relations Act on the provision of services in Welsh and a copy of a memorandum on the workings of the Welsh Language Act 1967 on the use of Welsh in the criminal justice system prepared by the National Council for Civil Liberties.

Correspondence related to the work of Fforwm Iaith Genedlaethol, mainly related to the administration of the Forum, Strategaeth Iaith Genedlaethol 1991-2001 (National Language Strategy), Cynllun Iaith Ardal (Area Language Plans), the Welsh Language Act 1993, Welsh as a subject in schools, language rights and the provision of Welsh language services by public and private sector bodies.

Correspondence regarding Cynllun Iaith Ardal (Area Language Plan), mainly with local authorities public bodies. The file also contains some correspondence related to other campaigns for Welsh language provision from public bodies and private companies and documents on public support for the Welsh language.

File contains papers related to the formation of an Area Language Plan (Cynllun Iaith Ardal), including correspondence, costings and guidelines for drafting and implementing a plan.

Sub fonds contain papers related to the work of Fforwm Iaith Genedlaethol (National Language Forum), an umbrella group of 26 organisations which was formed to campaign for a Welsh Language Act and which developed Strategaeth Iaith 1991-2001, a strategy to secure a safe and prosperous future for the Welsh language.
Member organisations of Fforwm Iaith Genedlaethol includes; Adfer, Canolfan Iaith Clwyd, Canolfan Iaith Genedalethol Nant Gwrtheyrn, Cefn, Cyd, Cymdeithas y Cyfamodwyr, Cymdeithas Tau Gwledig Cymru, Cymdeithas yr Iaith, Cyngor Llyfrau Cymraeg, Merched y Wawr, Mudiad Ysgol Meithryn, Pont, Pwyllgor Gyd-enwadol yr Iaith Gymraeg Arfon, Rhieni dros Addysg Gymraeg, Undeb Cenedlaethol Athrawon Cymru, Undeb Cenedlaethol Myfyrwyr Cymru, Undeb Myfyrwyr Cymraeg Aberystwyth, Undeb Myfyrwyr Cymraeg Bangor, Urdd Gobaith Cymru, Y Colegiwm Cymraeg, Y Gymdeithas Feddygol, and Eisteddfod Genedlaethol Cymru.

Contains papers relating to meetings of Y Cabinet Iaith (The Language Cabinet) and Fforwm Iaith Genedlaethol (National Language Forum) including agendas, minutes, reports.

Comprises records of Fforwm Iaith Genedlaethol, including administrative records, correspondence collected by Dr Carl Clowes as chairman, along with papers from Dr Clowes' involvement with the campaign for a Welsh Language Act in the 1980s and his campaign for a General Register Office for Wales.

File contains papers relating to Stratregaeth Iaith 1991-2001 including press releases, responses from public bodies and Labour Party policy documents.

File contains Welsh Language strategies and Welsh Language Schemes prepared as a result of the Welsh Language Act 1993 from a number of bodies; Cymdeithas Tai Eryri, Dyfed County Council, Isle of Anglesey County Council, the Society for Welsh in Education, the Welsh Office and Gwynedd Council.