Deeds of the Plas Dinas Mawddwy estate, 1551-1912, estate correspondence, 1850-1912, plans of Dinas Mawddwy and Plas Dinas Mawddwy, 1876, Peck and Buckley correspondence, 1852-1860; photographs, prints and postcards acquired by the Buckley family, 1799-1972, research notes and press cuttings about t...

Deeds, 1697-1883, mainly for lands in Merionethshire; estate papers, 1712-1927, including accounts; printed books, [1602]-1805; and family papers, 1775-1916, including wills....

Journals of Elizabeth Baker, 1778-1786; letter books relating to mining in Merionethsire, 1770-1775; letters, 1779-1797; copies of verses, including some relating to the impeachment of Warren Hastings; correspondence relating to legal matters arising from the mining partnership and the ownership of ...

Papers relating to Cymdeithas Gwrandawyr Cymru, 1955-1976, Cymdeithas Telynau noteCymru (The Welsh Harp Society), 1962-1979, papers relating to Rio Tinto Finance and Exploration Limited, 1969-1973 and the Chrome Company Ltd, 1970, and miscellaneous papers, 1942-1970....

A collection of 8933 items relating to the Bulkeley family of Baron Hill, Beaumaris and their estates in Anglesey, Caernarvonshire and Cheshire, 1329-1913. It is catalogued under the following main headings: family papers (wills, settlements, personalia, etc.), in which individuals are represented ...

The collection contains material relating to the Darbishire family, the Penmaenmawr and Welsh Granite Company, Trefor Memorial Village Hall and Institute and the recreation club for ex servicemen.
The family papers consist mainly of photographs and newspaper cuttings. The quarry papers are mainl...

Although the collection has been given the general title of Nannau Manuscripts, the collection includes papers not only relating to the original Nannau family, but also those of the Vaughans of Hengwrt and Dolmelynllyn, and the assembled papers regarding the Meillionydd lands in Lleyn and Ystumcolwy...

A collection of 20,871 items consisting in the main of estate and family correspondence, but also including deeds, rentals, accounts and miscellaneous papers relating to Anglesey and Caernarvonshire and ranging in date from 1546 to 1930. Among the subjects covered in varying detail by the correspon...

The first deposit of 50, 726 items represents the activities of John Evans, attorney of Porth yr Aur, Caernarvon and his practice.
Papers relating to the administration of justice and local government in the county of Caernarfon and in some cases Anglesey, consist of shrievalty papers, 1774 - 183...

The collection contains manuscripts relating to the various industrial activities of Searell in the following North Wales quarries and mines: Hafod y Llan, Sygun, Cwmorthin, Cwm Trwsgwl, Prince of Wales, Snowdon Slate, Deudraeth, Moelfre, Maenofferen, Braich yr Oen, Lliwedd Bach, Gallt-y-Llan, Croes...