Eryri : cân i unawdwyr, côr a cherddorfa
Part of The Alun Hoddinott Archive,
Ink full score and photocopy of vocal score. Typescript of words included, together with a related letter, 15 June 1969 (including corrections), from T. H. Parry-Williams.
geiriau: T. H. Parry-Williams
Dychwelyd = : Returning : meditation for mixed choir,
Part of The Tŷ Cerdd Archive,
Reproduction of a manuscript score, dated October 1976.
words by T. H. Parry-Williams, English translation by the composer.
Part of Mansel Thomas Music Manuscripts,
Manuscript score of an arrangement of 'Beth yw'r haf i mi?' (words, T. H. and Amy Parry-Williams), for unaccompanied mixed voices. Published Magor: Mansel Thomas Trust, Ref: MT057 [1998?].
An autograph album of Ellen ('Nellie') Harris Jones (née Williams, d. 1994), Caernarfon and Llanrwst, containing entries, mostly in Welsh, 1924-45 and 1972, by E. Morgan Humphreys, R. D. Rowland ('Anthropos'), R. J. Rowlands ('Meuryn'), Eliseus Williams ('Eifion Wyn'), T. H. Parry-Williams and others.
Harris Jones, Ellen, d. 1994
Part of Papurau Crwys,
Llythyrau, 1935-1967, oddi wrth Wil Ifan a T. H. Parry-Williams, gan gynnwys llythyrau, 1967, yn dymuno'n dda iddo yn dilyn afiechyd.
Wil Ifan, 1883-1968