Deeds and documents, mostly relating to cos Ang. and Mer. Several items relate to the Lloyd family of Dduallt, Ffestiniog, co. Mer., 1551-1740. The collection also includes overseer's accounts and other parochial records relating to the parish of Llandyfrydog, co. Ang., 1828-1869.

Holograph notes of a sermon on Hebr. x, 12-13 by Edward Stephen ('Tanymarian'); a cutting from Y Rhedegydd, 7 Mehefin 1934, of a report on the unveiling of a tablet at his birthplace, Bron Elliw, Rhydysarn; and a letter by G. J. Williams, Bangor, 9 July 1930, containing reminiscences of Ffestiniog.

Printed copies of three articles in Y Genedl Gymreig on 'Y Line Fach', i.e. the Ffestiniog Railway, written by Griffith Williams, Minffordd, Penrhyndeudraeth.

Papers of W. A. Madocks, including his memoranda books, letters to John Williams (his agent at Portmadoc), 1806-1825, and some materials for his biography in the form of copies of letters from Ebenezer Thomas (`Eben Fardd'), John Thomas, Chwilog, Ellis Owen, Cefnymeusydd, and others; a 'statute book' of the 'Ancient and Renowned Borough of Tremadoc', 1805-1810, with an account of the Tremadoc Ball and Hunt; together with records from the Harbour Office, Porthmadog, including account books and registers of Portmadoc harbour, 1824-1917. Also included are records of the Festiniog and Blaenau Railway Co., 1866-1883; plans, sections and other records, 1860-1897, of the Aberystwyth and Welsh Coast Railway, the Bala and Festiniog Railway, the Beddgelert Railway, the Caernarvonshire Railway, the Caernarvonshire and Nantlle Railway, the Cambrian Railway, the Corris, Machynlleth, and River Dovey Tramroad, the Corwen and Bala Extension Railway, the Croesor Railway, the Croesor and Portmadoc Railway, the Festiniog Railway, the London and North Western Railway, the Merionethshire Railway, the Portmadoc, Beddgelert and Rhyd-ddu Railway, and the West Midland, Shrewsbury and Coast of Wales Railway; a register of shareholders and minute books of the Festiniog Refreshment House Company, 1878-1890; a minute book and share ledger of the Penrhyndeudraeth Lead Mining Company, 1875-1882; nominal and muster rolls of the Caernarvonshire Volunteers, 1860-1883, and other Caernarfonshire militia records; a minute book and papers relating to collections in Caernarfonshire towards Queen Victoria's Jubilee, 1886-1887; account books relating to slate quarries and to shipping, and miscellaneous Caernarfonshire material, 1723-[19th century].