A collection of 9097 papers relating to the Mostyn family, which includes literary and historical manuscripts, dating from the 16th to 18th centuries, notably 76 volumes /items of Welsh poetry; family papers, including marriage settlements, wills and personalia of the Mostyns of Mostyn, Gloddaeth, B...

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 ...

This collection contains accounts, ledgers, report books, correspondence and miscellaneous papers relating to the Cefn Du Slate Quarry in the parishes of Llanrug and Llanbeblig, Caernarvonshire.
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Records of Cilgwyn Quarry Company, particularly accounts, 1879-1933: Particulars regarding state of quarry, rebuilding specifications, etc, 1880-1897 Correspondence between quarry managers of Cilgwyn-Nantlle district dealing with wages, etc., 1895-1903 Correspondence between directors and manager; n...

A collection of 585 items, containing deeds and documents relating to properties in Aber, Aberdaron (Methlan Estate), Borth-y-gest (Independent and C.M. Chapels), Caernarfon, Llanbeblig, Llanfihangel-y-Pennant and Penmorfa (Brithdir and Cefncoch), Llaniestyn (Aber-y-wanc), Llannor (Bodegroes), Llanw...

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...

2 account books and lists of payments made to Dr Roberts by the quarrymen of Dyffryn Nantlle. Listed are the names of the quarries, quarrymen and their homes.
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A collection of 23 items consisting of two eisteddfod essays on the subject of the history of Dyffryn Nantlle quarries, co. Caernarfon by John Hughes (Alaw Lyfnwy) and Llenor Llyfnwy; leases and assignments illustrating the quarrying activities of John Lloyd Jones and others, including Mr H. J. Stan...

A collection of 3040 items relating to the Penrhyn estate and its successive owners: the Griffith, Williams, Pennant and Douglas-Pennant families. It comprises, family papers of the Griffiths, 1340-1627, represented by Gruffydd ap Gwilym ap Griffith, William ap Griffith ap William, Sir William Grif...

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...

Records of the Rhiwbach Slate quarries, 1858-1918. They include accounts of 'country sales', particulars of slate making, wharf accounts, 'bargain' books, slate inspector's book, day wagemen accounts, pay sheet deduction ledgers, time books, stores accounts, accident returns, price cards and miscel...

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...

Bank Pass Book, 1892-1898.
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Banking records of the Platt family including Gorddinog and Ystrad Hall Estates, [c.1890]-1956, notes on the dissolution of Williams & Co. Bank,[c.1915], agreements to supply water to Cae Coch mine and to construct Brwynog Reservoir, leases of Tynddol Quarry, Prince Llewelyn or Bwlchcynyd Quarry and...

Records mainly relating to Bron y Fuches, Dinorwig, and the Williams family. They include diaries and copies of diaries of William Morris Williams, 1842-1894, and of his nephew from New York and Scranton, 1874; letters, mainly from T. G. M. Luckock of Upper Berwick, Shrewsbury, 1857-1860, relating t...

Papers relating to Castell Slate Quarry, [1854]-1879, including deeds, 1861-1877; and correspondence, 1862-1879....

Papers of and collected by Ivor E. Davies of Penmaenmawr, 1706-1978, including programmes and yearbooks, 1900-1950; correspondence, 1889-1971; research papers relating to industry, 1837-1975, including records of Welsh Granite Co. Ltd, 1900-1973; records relating to Penrhyn Quarry, 1800-1913; resear...

Records of Dinorwic Quarries Co. Ltd, 1809-1970, including financial records, 1809-1969; production records, 1844-1969; sales records, 1835-1970; slate shipment records, 1837-1969; wages records, 1832-1969; accident and safety records, 1884-1969; letter books, 1870-1962; correspondence, 1895-1970; r...

Records of the Dorothea Quarry Co. Ltd., 1792-1970, including minutes, 1850-1970; directors' reports and related records, 1849-1970; directors' working papers, 1878-1969; financial records, 1857-1970; records relating to slate sales, 1835-1970; production records, 1858-1969; records relating to wage...