Press letter books, 1878-1920, press invoice books, 1878-1919, account books, 1893-1920, and a minute book, 1900-1901.

A bibliography compiled by T[homas] Hevin Williams in 1931 for a study of Merioneth place-names.

Deeds, 1490-1977, including deeds and documents mainly relating to properties on Anglesey, Caernarfonshire, Merionethshire and Middlesex, 1675-1977; and deeds relating to properties in Finchley, Middlesex, 1490-1796.

Deeds, documents and probate records, 1617-1853, relating mainly to the parishes of Caerhun, Conwy, Dwygyfylchi, Gyffin, Llanbedrycennin and Llannor, Caernarfonshire, and to the Abbey estate, in Denbighshire, Merionethshire and Caernarfonshire, 1811-1819; notes on sermons, 1861-1889; and miscellaneous papers relating to Amlwch, Anglesey, 1801-1868.

Copies of the Queen's instructions to Henry, Earl of Pembroke, Lord President of the Council in Wales and the Marches, 1586; the commission of the lieutenancy of Wales and the Marches to Henry, Earl of Pembroke, March 22, 1600, with power to make deputations to persons named in the commission for the different counties within the lieutenancy; a petition by six members of the Privy Council to the Lord Keeper to renew the commission of lieutenancy for Merioneth and to leave out the names of John Lewys Owen and Cadwalader ap Ris, who had been arraigned before the Court of Star Chamber for misdemeanours, and to appoint Griffith Vaughan and Robert Lloyd to be deputies for the Earl of Pembroke for that county; a Privy Council letter to the same effect covering a renewed commission to the Earl of Pembroke, March 31, 1600, with a list of justices of the peace for Merioneth; and orders for the reformation of the Court of the Marches, 1577.

Deeds and documents, 1598-1856, mostly assignments of mortgage and related bonds, concerning Dôl y Cae and other premises in the parish of Tal-y-llyn, including a lease from William Owen Pughe and his brother Richard to his son Aneurin Owen Pughe.