Title deeds, 1522-1539, 1595x[1622], which include deeds of sale to Eliza ap Moris for property in Nanmor, Beddgelert, 1522; a mortgage to William Maurice, 1595, and a deed of sale by him, 1600, for property in Ffestiniog; fragment of a deed of William Maurice relating to lands in Dolgellau, [pre-1622]; and nineteenth century notes describing former crown lands in Ffestiniog which came into his possession.

Financial accounts of Dolgellau British School, 1860-1863.

Poor rate assessments made on the inhabitants of the township and parish of Dolgellau, Merionethshire.

Title deeds and family papers of the Owen family of Garthangharad, Dolgellau, Merioneth, 1539-1909, papers and correspondence of the legal practice of Edward Owen, 1799-1852, and deeds and estate correspondence of the Hengwrt, Rhug and Nannau estates, mainly 1824-1858.

Deeds and documents, 1511-1905, relating to premises mainly in Merionethshire, including Dolgellau, Llanfachreth, Brithdir, Llangelynnin and Llanelltyd.

Papers relating to Cymdeithas Gwrandawyr Cymru, 1955-1976, Cymdeithas Telynau Cymru (The Welsh Harp Society), 1962-1979, papers relating to Rio Tinto Finance and Exploration Limited, 1969-1973 and the Chrome Company Ltd, 1970, miscellaneous papers, 1942-1970; papers relating to the Welsh Folk-Song Society, 1956-1985; and to his research and music interests, [1900]-[1995].

Nineteen deeds, 1701-1891, relating to properties in the parish of Dolgellau, Merionethshire, and in particular to Callestra (Gallestra).

Correspondence from the Rector of Dolgellau to the Bangor Diocesan Council for Moral Welfare, relating to the letting of three rooms at Dolgellau Rectory for moral welfare work, 1953.

Miscellaneous deeds, documents, bonds and legal papers, and accounts, 1681-1856, relating to properties in the parishes of Dolgellau, co. Merioneth, and at a place called Cowarch, co. Merioneth. There are also wills of testators in the parishes of Llanymawddwy, co. Merioneth, 1800, and Llangadfan, co. Montgomery, 1829. There are also a number of inventories of properties of deceased persons and documentation relating to the payment of legacy duties on estates of deceased persons from the counties of Merioneth and Montgomery.

Deeds, 1632-1798, relating to properties in the townships of Dyffrydan and Dolgledr, Dolgellau, and the Cefn yr Owen estate in the parish of Dolgellau, Merionethshire.

A volume of sermons in Welsh, 1858-1862, of Dr Thomas Davies, with details of the date and place of delivery, mostly at Dolgellau Congregational church, where he ministered between 1858 and 1863.

Notes on 'Workhouse Dolgelley', etc.

A volume of sermons in English and Welsh, 1855-1862, of Dr Thomas Davies, with details of the date and place of delivery, mainly Brecon College, where he was a theological student between 1854 and 1858, and Dolgellau, where he ministered at the Welsh Congregational church between 1858 and 1863.

Cynlluniau arfaethedig ar gyfer sefydlu Canolfan Treftadaeth Y Crynwyr yn Nolgellau, 1987. = Plans for a proposed Quaker Heritage Centre in Dolgellau, 1987.