Letters and copies of letters from the Reverend John Roberts, Llanbryn-mair, and letters to him from various correspondents, together with one letter addressed to his son, the Reverend Samuel Roberts ('S.R.'). The letters from John Roberts are to Revd. Joseph Gilbert, Hull, 1825 (sending a copy of an extract from a letter received from Mr. Jenkin Lewis of Newport [cf. The Evangelical Magazine, 1825, pp. 459-60, 'Dr. Williams' Theology']), Mrs. [David] Morgans, [Forge, Henllan Amgoed], 1831- 1832 (condolence on the death of Mr. Morgans), and John Davies, Dolgoch, 1831 (advice on leaving Llanbryn-mair for Carmarthen), the letters to Mrs. Morgans and John Davies being copies made by [the Reverend] John Breese, Carmarthen, 1835, for his cousin, Revd. Samuel Roberts, Mary [B - ], 1833 (religious sentiments) (?copy), the Reverend David Rees, Llanelly, 1833 (sympathy at a time of great anxiety), the writer's son, John Roberts, Student, Newtown, 1831 (advice on leaving Llanbryn-mair to enter the Academy), and Miss Brees (copy, undated and incomplete) (pleasure at the religious feeling in her papers). The letters addressed to John Roberts are from [the Reverend] Peter Edwards, Wem, [18]25 (he is in want of an assistant and had thought of the addressee's son as a likely person) (with copy reply), [the Reverend] Jas. Griffiths [St. Davids] Treliwyd, 1833 (mention of various meetings, outline of a sermon, a report concerning Mr. J. Elias), Willm. Robinson, Chesterfield, 1825 (the addressee's son and their pastorate) (with draft reply), George (and Jane) Roberts, Ebensburg, Cambria County, 1800, 1809 and 1821 (a religious revival in the greater part of New England, family and other news, etc.), and Sarah Yallowley, Bryn y Gyn, 1826 (concerning books). Most of the letters are in English and some of those from John Roberts have been translated into Welsh and published at least in part [by 'S.R.'] in Cofiant y Parch. John Roberts o Lanbrynmair (Llanelli: David Rees a John Thomas, 1837).

Three letters to Evan Roberts, father of John Roberts (Senior) and George Roberts, one of them, 1808, from A. B. Crosse, Streatham, signing herself 'your sincere friend & Landlady', to Mr. Evan Roberts, Miller, Llanbrynmair (instructions concerning trees, etc.), the other two, 1804 and 1811, from G[eorge] Roberts [Ebensburg] to his parents (addressed 'Mr Evan Roberts, Dolgadvan Mills, Llanbrynmair . . . ') (in the earlier of the two how the revival continues to gain ground and has recently come within 25-30 miles of them, criticism of the Presbyterians before the revival came, some account of Rees Morgan and Grace, and the prosperous state of the nation, and in 1811 sending a copy of a letter from Grace Morgan [née Roberts] to her parents).