Ymhlith y gohebwyr amlycaf mae Lewis Valentine (cerdyn Nadolig), Morgan Watkin (4), Harri Webb (2), A. H. Williams (3), D. J. Williams, Abergwaun (16), David Williams (9), Ifor Williams (10), Iolo A. Williams (18, a'i deulu (3), ac un oddi wrth G. J. Williams, 1962, at Elinor Williams), J. E. Caerwyn Williams, J. Lloyd Williams, Morris Williams (2), Stephen J. Williams (4).
Part of Papurau Iorwerth C. Peate,
Llythyrau, 1924-1979, gan gynnwys rhai oddi wrth V. Sackville West; Wynn P. Wheldon; Eirene White; Robert Wildhaber (4); Dafydd Wyn Wiliam (2); Eurwyn Wiliam; J. B. Willans (4); D. E. Parry Williams; D. J. Williams (9); Evan Williams; Glanmor Williams (3); Griffith John Williams (7); Ifor Williams (5); Iolo A. Williams (2); J. E. Caerwyn Williams (2); J. Ellis Williams (2); J. Gwynn Williams; John Lasarus Williams (3, ynghyd ag eitemau yn ymwneud ag Undeb y Gymraeg Fyw); John Roberts Williams (8); J. Roose Williams (3); Kyffin Williams (5, ynghyd รข braslun pensil); Morris T. Williams; Owen Williams (2); R. Bryn Williams; Stephen J. Williams (5); T. H. Parry-Williams (12); Tom Nefyn (2); Victor Erle Nash-Williams (2); Seamus Wilmot (3); a Virginia Woolf.
Sackville-West, V. (Victoria), 1892-1962
Part of Papurau Iorwerth C. Peate,
Llythyrau a chardiau amrywiol, 1961, gan gynnwys rhai oddi wrth Dilwyn John (3); Thomas Parry (2); Vincent H. Phillips; David Williams (copy); Cynan; Stuart F. Sanderson (3); Ffransis Payne (2); Griffith John Williams; H. Meurig Evans; Trefor M. Owen; Tony Lucas (2); Glanmor Williams; Iolo A. Williams; W. Leslie Richards; Alun Oldfield-Davies; a T. E. Nicholas. Anfonwyd rhai ohonynt at Nansi Peate, ac mae nifer yn cyfeirio at lawdriniaeth Iorwerth Peate.