Llythyrau, [1922]-[1968]. Ymhlith y gohebwyr mae Derec [Llwyd Morgan] (4), Dyfnallt Morgan (3), Elena Puw Morgan (1), Herbert Morgan (2), Prys Morgan (1), T. J. Morgan (9), R[hys] Hopkin Morris (1) a Gwenfron Moss (1).
Morgan, Derec Llwyd
Part of Papurau T. J. Morgan,
Cerddi gan R. Williams Parry, 1937, a llythyrau oddi wrth J. O. Williams, 1967, a Thomas Parry, 1971, a drafft o erthygl Prys Morgan yn ymwneud â'r cerddi a gyhoeddwyd dan y teitl 'Manylder Cyfewin R. Williams Parry', Y Genhinen 22 (1972), tt. 31-33.
Parry, Robert Williams
Part of Papurau D. Tecwyn Lloyd,
Llythyrau oddi wrth gyfranwyr i Taliesin gan gynnwys rhai oddi wrth Euros Bowen (13), Harri Pritchard Jones (2), Gareth [Alban Davies] (3), Rhydwen Williams (2), Gwyn Williams, Steve Eaves (3), Gerallt [Jones] (4), Gwilym R. [Jones], [R.] Bryn [Williams] (2), [T.] Llew [Jones], Hafina Clwyd, J. Gwyn Griffiths (3), Prys [Morgan] (3), Aled Jones-Williams, Gwyn Thomas (15), J. R. Jones, Bedwyr [Lewis Jones], John Rowlands, Mari [Ellis], Leslie [Richards], Eluned Phillips, Nesta [Wyn Jones] (2), Bryan [Martin Davies] (7), Derec [Llwyd Morgan] (3), Siôn Eirian (3), B[en] B[owen] T[homas], W. D. [Williams] (4), Iorwerth [Peate] (3), Kate Roberts, Caradog [Prichard] (5), Eigra [Lewis Roberts], Meic [Stephens], Harri [Gwynn], Islwyn [Ffowc Elis] (2), Gwenallt, John [Gwilym Jones], a Dyddgu [Owen].
Bowen, Euros.
Part of Papurau Harri Gwynn,
Llythyrau, [1948]-[1983], gan gynnwys rhai oddi wrth Bedwyr Lewis Jones, Bobi Jones (2), Dafydd Glyn Jones, E. D. Jones, F. Wynn Jones, Glyn Jones, Gwilym R. Jones, J. E. Jones, John Gwilym Jones (2), Kitty Idwal Jones, Henry Lewis, [D.] Tec[wyn] Lloyd (8), Alan Llwyd (2), Tom Macdonald, Awen Mona, Prys Morgan, T. J. Morgan, James Nicholas (3), a W. Rhys Nicholas.
Jones, Bedwyr Lewis