Llythyrau at Morris Jones, 1933-1977, oddi wrth Saunders Lewis ac eraill; copïau llawysgrif a theipysgrif o ddramâu gan Saunders Lewis. Huw Lloyd Edwards, F. Sladen-Smith ac Ieuan Griffith, a chyfieithiadau o ddramâu Shakespeare gan J. T. Jones, Porthmadog,[1934]-[1968]; posteri ar gyfer dramau a berfformiwyd gan Gwmni Garthewin neu yn Theatr Garthewin,1946-1958; cynlluniau mewn dyfrlliw a phensil o wisgoedd a setiau, [1948]-[1959]; cynlluniau llwyfan,[1968]; ffotograffau o berfformiadau, [c. 1947]-[c.1980]; tocynnau, raglenni ac effemera arall, 1946-1977; gohebiaeth ynglŷn â'r theatr a'r cwmni,1946-1954; llyfrau cofnodion, 1949-1989 (ynghyd â nodyn, 1994); papurau ariannol,1946-1985; papurau cyffredinol,1946-1971; torion papur newydd,1946-1977; a rhaglenni'n ymwneud â chwmnïau theatrig eraill,1947-1984 = Letters to Morris Jones, 1933-1977, from Saunders Lewis and others; manuscript and typescript copies of plays by Saunders Lewis, Huw Lloyd Edwards, F. Sladen-Smith, and Ieuan Griffith, and translations of Shakespeare plays by J. T. Jones, Porthmadog, [1934]-[1968]; posters of plays performed by Cwmni Garthewin or at Theatr Garthewin, 1946-1958; watercolour and pencil designs of costumes and sets, [1948]-[1959]; stage plans, [1968]; photographs of performances, [c.1947]-[c.1980]; tickets, programmes and other ephemera, 1946-1977; correspondence concerning the theatre and company, 1946-1954; minute books, 1949-1989 (with a note, 1994); financial papers, 1946-1985; general papers, 1946-1971; newspaper cuttings, 1946-1977; and programmes relating to other theatre companies, 1947-1985.
Theatr Garthewin.
