Llythyrau oddi wrth Iorwerth Peate, D. Rhys Phillips, Edgar Phillips, Mati Rees, T. Ifor Rees, Keidrych Rhys, Brinley Richards, Melville Richards, D. O. Roberts, Elwyn Roberts, Gomer M. Roberts, Glyn Simon a J. Beverley Smith, 1937-1964.
Phillips, D. Rhys (David Rhys), 1862-1952
Llythyrau, 1923-1982, gan gynnwys rhai oddi wrth Stewart Sanderson (24); Anders Sandvig; H. N. Savory (2); R. U. Sayce; Elfyn Scourfield (yn cynnwys geirda gan Iorwerth Peate); Glyn Simon (2); Robin Simon (2); P. Smith (3); Alf Sommerfelt (11); Axel Steensberg (2); Meic Stephens (6); a Dag Strömbäck (3).
Sanderson, Stewart
Gohebiaeth gyffredinol/General correspondence
Yn cynnwys llythyrau oddi wrth/Includes letters from: Yr Athro/Professor D. J. Llewelfryn Davies; Ifor Davies AS/MP; Gwyn Erfyl; Emlyn Hooson; Kitty Idwal Jones; Selwyn Jones, Merthyr Tydfil; T. W. Jones AS/MP; Horace King AS/MP; Geraint Morgan AS/MP; E. T. Nevin; Roy Noble; Gareth Price; Goronwy O. Roberts; Dr Glyn Simon; Ted Spanswick; George Thomas AS/MP (2); William Whitelaw; Gruffudd Aled Williams; Dr Phil Williams.
Davies, D. J. Ll. (David James Llewelfryn), 1903-
Gohebiaeth gyffredinol/General correspondence
Yn cynnwys llythyrau oddi wrth/Includes letters from: Emyr Daniel; Syr/Sir Goronwy Daniel; John Davies; Dr Noelle Davies; Gwyn Erfyl; J. Gwyn Griffiths; Edward Heath; J. Cyril Hughes; Leopold Kohr; Robyn Lewis (2); Syd Morgan (2); Delwyn Phillips; Brinley Richards; Dr Glyn Simon; Ned Thomas; Dafydd Wigley.
Daniel, Emyr
Gohebiaeth gyffredinol/General correspondence
Yn cynnwys llythyrau oddi wrth/Includes letters from: Jack Brooks; Jennie Eirian Davies; Syr/Sir Charles Hill; Arglwydd/Lord Elwyn-Jones; J. Idwal Jones AS/MP; D. Elystan Morgan (2); Niall MacDermot (2); Brinley Richards; Syr/Sir Wyn Roberts; Dr Glyn Simon; Tudor Watkins; Jac L. Williams (2); Dr Phil Williams; R. O. F. Wynne (2).
Brooks, Jack, Lord 1927-