Addysg a'r Iaith Gymraeg/Education and the Welsh Language Ychwanegu i'r clipfwrdd P1/4 Ffeil 1977-1978 Rhan oPapurau Gwynfor Evans/Gwynfor Evans Papers,
Addysg ddwyieithog/Bilingual education Ychwanegu i'r clipfwrdd P1/1 Ffeil 1968-1975 Rhan oPapurau Gwynfor Evans/Gwynfor Evans Papers,
Employment of teachers trained to teach through the medium of Welsh Ychwanegu i'r clipfwrdd CG6/33 Ffeil 1957-1958 Rhan oUniversity of Wales Archive
Papers of the committee on the question of Welsh in teaching in the University of Wales Ychwanegu i'r clipfwrdd CV/5 Ffeil 1965-1969 Rhan oUniversity of Wales Archive
Welsh Medium Education Ychwanegu i'r clipfwrdd A2/8 Ffeil 1996-1998 Rhan oInstitute of Welsh Affairs Records,