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.

Y Dyddiadur Methodistaidd am 1847 a fu'n eiddo i Robert Edwards (Derfel Meirion), Llandderfel, sir Feirionnydd, yn cynnwys cofnodion, 24 Ionawr-31 Rhagfyr 1847, yn nodi ei waith fel garddwr, saer maen a llafurwr, ei amser hamdden, ei addoli a'r tywydd (tt. 9-57). = Y Dyddiadur Methodistaidd, 1847, belonging to Robert Edwards (Derfel Meirion) of Llandderfel, Merionethshire, containing entries, 24 January-31 December 1847, recording his work as a gardener, monumental mason, farm labourer and handyman, his leisure pursuits, worship and the weather (pp. 9-57).
Ceir nodyn gan Derfel Meirion, 22 Mai 1880, ar t. ii. = A note by Derfel Meirion, 22 May 1880, is on p. ii.

Tua chant ac ugain o gerddi holograff, [1910au]-[1930au], gan Hugh Edwards (Derfelog), Manceinion, nifer ohonynt yn ymwneud ag ardal Llandderfel, sir Feirionnydd, neu ar bynciau crefyddol. = Some one hundred and twenty holograph poems, [1910s]-[1930s], by Hugh Edwards (Derfelog), Manchester, many relating to the Llandderfel area, Merionethshire, or on religious themes.
Ymddengys i rai o'r cerddi gael eu cyhoeddi yn newyddiadur wythnosol Y Seren (Bala); nid ydynt yn ymddangos yn ei gyfrolau Oriau Myfyr (Bala, [1898]) nac Oriau Anian (Bala, [c. 1900]). = Some of the poems were published in the weekly newspaper Y Seren (Bala); none appear in his Oriau Myfyr (Bala, [1898]) or Oriau Anian (Bala, [c. 1900]).