Cofnodion Pwyllgor Datblygu Addysg Gymraeg, PDAG, 1985-1994, yn cynnwys cofnodion cyfarfodydd, gohebiaeth, adroddiadau a deunydd ymchwil, gyda phapurau sydd yn ymwneud gan fwyaf â'r sector addysg yng Nghymru (ysgolion, prifysgolion a cholegau, ac addysg i oedolion) ac â chyrff megis y Swyddfa Gymreig, Bwrdd yr Iaith Gymraeg, Cyngor Cwricwlwm Cymru, Cydbwyllgor Addysg Cymru, Rhieni dros addysg Gymraeg, ac amryw gynghorau sir yng Nghymru = Records of the Welsh Education Development Committee (Pwyllgor Datblygu Addysg Gymraeg, PDAG), 1985-1994, including minutes of meetings, correspondence, reports and research material, with papers mostly relating to the Welsh education sector (schools, universities and colleges, and adult learning) and to bodies such as the Welsh Office, the Welsh Language Board, Curriculum Council for Wales, the Welsh Joint Education Committee, Parents for Welsh medium education, and to various county councils in Wales.