Papers of Rev. Canon Henry Thomas, 1871-1946, including notes relating to Merioneth, with special reference to local history and antiquities and gentry families; notes on Welsh literature, the development of the eisteddfod, and theology; an address given on the centenary of the National School at Dolgellau, 1946; various printed material and a report on local charities, 1895.

A volume entitled 'Collections relative to the History of Merionethshire' containing notes and transcripts of documents by W. W. E. Wynne relating to the history and antiquities of Merioneth. Labelled 'Peniarth MS No. 48' on p. ii.
Tipped in are a number of original documents, including a petition, late 16th century, of Thomas Humfreys of Nanney concerning the murder of Edward ap David at Dolgellau (pp. 371-4).

'Hynafiaethau Meirion Orllewinol. Cyflwynedig i Eisteddfod Towyn Yr hon a gynnelir Awst 2, 1871' by 'Cadifor', with an adjudication, in Welsh and English, by John Pughe ('Ioan ab hu Feddyg').

Journal, 18 June-22 October 1914, recording visits to archaeological sites in Merionethshire.

Two volumes which contain two groups of scrapbooks, eighteen in all, containing materials relating principally to Montgomeryshire and Merionethshire, compiled by George Eyre Evans in 1910 in his capacity of Assistant Inspector to the Royal Commission on Ancient Monuments in Wales and Monmouthshire.
They consist of notes in the autograph of George Eyre Evans, including extracts from the parish registers of Llanidloes, 1616-1747, Llanerfyl, 1670-1783, and Cemmaes, 1733-1812, and a transcript of a part of a journal of a visit by the Reverend Thomas Price, vicar of Merthyr Tydfil, to Dolcoed Wells, Llanwrtyd, 1762; autograph letters to George Eyre Evans from Henry Bonsal, Llanbadarn Fawr, Cardiganshire, J. Gwenogvryn Evans, Llanbedrog, S. A. Evans, Llanbadarn Fawr, H. E. Forrest, Shrewsbury, C. P. Gasquoine, Caxton Press, Oswestry, F. W. Gibbins, Pendine, J. D. James, Llanerfyl Rectory, D. E. Jones, Board of Education, Katie Jones, Llansilin, D. C. Lloyd Owen, Four Oaks, Warwickshire, Elsie Owen, Cwmrhaiadr, Machynlleth, O. R. Owen, Llangynog, Norman Penney, Friends' Historical Society, London, J. H. Swann, Manchester, E. R. Vaughan, Staylittle and John Williams, Llanwddyn Vicarage; photographs, illustrations, rubbings of inscriptions, press cuttings and broadsides; and miscellanea, including notes in Welsh on the ancient monuments of Cemmaes, compiled in 1909 by Hugh Francis, clerk to the parish council.