Gohebiaeth bersonol / personal correspondence,
Gohebiaeth bersonol / personal correspondence,
Chuilleanáin, Eiléan Ní.
Chuilleanáin, Eiléan Ní.
Vítek, Václav,
Vítek, Václav,
Gohebiaeth a phapurau a dderbyniwyd oddi wrth gyhoeddwyr ac asiantiaid / Correspondence and papers received from publishers and agents,
Gohebiaeth a phapurau a dderbyniwyd oddi wrth gyhoeddwyr ac asiantiaid / Correspondence and papers received from publishers and agents,
Eyre & Spottiswoode (Publishers) Ltd,
Eyre & Spottiswoode (Publishers) Ltd,
Penguin Books Ltd,
Penguin Books Ltd,
Maurice Temple Smith Publishers,
Maurice Temple Smith Publishers,
Charles Cledlyn Charman, Gwasg Gee,
Charles Cledlyn Charman, Gwasg Gee,
Macdonald & Co. (Publishers) Ltd,
Macdonald & Co. (Publishers) Ltd,
Hodder & Stoughton Ltd,
Hodder & Stoughton Ltd,
Richard Scott Simon Ltd,
Richard Scott Simon Ltd,
Cyngor Llyfrau Cymraeg / Welsh Books Council,
Cyngor Llyfrau Cymraeg / Welsh Books Council,
J. D. Lewis a'i Feibion Cyf,
J. D. Lewis a'i Feibion Cyf,
Cyhoeddiadau Mei,
Cyhoeddiadau Mei,
J. M Dent & Sons Ltd (Publishers),
J. M Dent & Sons Ltd (Publishers),
Curtis Brown Ltd,
Curtis Brown Ltd,
Sphere Books Ltd,
Sphere Books Ltd,
Victor Gollancz Ltd,
Victor Gollancz Ltd,
David Higham Associates,
David Higham Associates,
McGraw-Hill Book Company, Inc,
McGraw-Hill Book Company, Inc,
