The letters, 1896-1916, are generally very lengthy giving full accounts of their author's activities and travels. Many refer to events and developments at the University College of Wales, Aberystwyth, notably its Welsh Library for which he was responsible from 1899 until 1907. His activities and difficulties at the Welsh Library are discussed in some detail. Some of the letters discuss John Glyn Davies's reading and researches and some his prospective applications for posts.