A photostat facsimile of the book of accounts of the churchwardens of the parish of Llandderfel, Merionethshire, 1726-1756.

Manuscripts of works by Wmffre Dafydd ab Ifan, Llanbrynmair, [1620x1660], and others; accounts, rentals and chapel records relating to Llanuwchllyn, Llandderfel and Llandrillo-yn-Edeirnion, and the Glanllyn estate, Merionethshire, 1785-1878; commonplace books, 1717-1824; letters, mainly to Ivan T. Davies, from O. M. Edwards, T. E. Ellis, Professor Kuno Meyer and others, 1869-1929; and other items relating to the Rev. Ivan T. Davies, 1872-1969.

Notes, jotting and memoranda by Ifor Owen Wynn Williams, etc. relating mainly to Llandderfel.

'Clustnodwr neu Lyfr Clustnodau Defaid', being a volume containing diagrams and particulars of sheep ear-marks used by farmers in the parishes of Llangynog, Pennant Melangell, Llanrhaiadr ym Mochnant, Llanwddyn and Hirnant in Montgomeryshire, Llandrillo, Llanfor, Llandderfel and Llangower in Merioneth and Llangwm in Denbighshire, 1827.

Diagrams and particulars of sheep ear-marks used by farmers in the parishes of Llandrillo, Llandderfel, Llanfor, Llanycil, Llanuwchllyn and Llangower in Merioneth, Llangynog and Pennant Melangell in Montgomeryshire and Llangwm, Denbighshire; a few notes on a system of short-hand writing.

A miscellany of prose and verse begun by Robert Edmund, corvizer, Bala. It includes 'englynion' by David Thomas ('Dafydd Ddu Eryri') [1759-1822], 1784-1792, Rolan[t] Huw [1714-1802], Evan [Evans] 'Fardd ac Offeiriad' ['Ieuan Fardd' or 'Ieuan Brydydd Hir'] [1731-1788], Robert Lewis, Robert Edwards, Sion Brwynog 'o Edeyrnion' [d. ?1567], Evan Ellis (Llanfawr, 1791), John Williams (Dolgellau), W[illiam] Jones (Llangadfan) [1726-1795], Thomas Jones, J. Robert, Rice Jones, Rhobert Gwilym and Robert Edwards (Llandderfel); a hymn by Walter Davies ('Gwallter Mechain') [1761-1849], with a letter and 'penillion' by David Jones ('Dafydd Sion Siams'); 'cywyddau' by Evan Ellis, 1791-1793, Robert William [1744-1815], Maredudd ap Rhys [fl. 1440-1483], Tudur Aled [c. 1465-c. 1525], Edward ap Raff [fl. 1587], Hugh Hughes ['Huw ap Huw' or 'Y Bardd Coch o Fôn'] [1693-1776], John Prys (Cae'rddinen), John Roberts (Tydu, 1782-1787), Rhys Jones ('o'r Blaenau', 1789), William Jones (Llangadfan) and Walter Davies; 'awdlau' by Robert William, Pandy, 1793, John Williams alias Shon Cynwyd, 1792, Rowland Huw and Rhys Jones 'o'r Blaenau' [1713-1801]; a copy of the first twelve chapters of Rhetoreg ... by Henry Perry [1560?-1617]; copies of letters by John and Evan Robert, 1793-1794; correspondence concerning Llandderfel, 1843; an extract from the will of 'Mr. Meyrick' relating to a charity school at Bala.

A letter dated 1 December 1886 from William Morgan, rector of Llandderfel, Merioneth, to Thomas Jones, Bryn Melyn, Llandderfel, in reply to a deputation to the rector, appointed at a meeting of tenant farmers and others at Llandderfel, demanding 15% abatement from the half-year's tithe rent-charge due on 1 January 1887. There is also a copy of the letter in Welsh.

Faculty papers with associated correspondence and some plans for the church of St. Derfel, parish of Llandderfel, 1921-1988.