Wynn Hall Colliery papers relating thereto, including : schedules of papers and plans, Wynn Hall Colliery and the Denbighshire coalfield, 1876; estimates of coal unworked under the Wynn Hall estate, by A. H. Kenrick and John P. Kenrick; schedule of sale of colliery plant at Bertram Colliery; lists of collieries in co. Denbigh working in 1853, 1865 and 1901; copy extract from "Coal Resources at the Close of the 19th Century" by Hull; sale catalogues of plant at Wynn Hall Colliery, 1869 (printed); copy letter (20 April 1872) to Messrs. Whalley of Plas Madoc regarding mines drainage; lists of principal landowners (1904) in the parishes of Rhosllannerchrugog, Esclusham and Cefn; correspondence and copy correspondence regarding colliery leases, terms of proposed lease, pit drainage, etc; estimate of total tonnages of coal in Plas Madoc, Wynn Hall, Gardden Lodge, Gardden Hall and Brandy Collieries, 1874; seams worked at Wynn Hall Colliery; particulars of Wynn Hall Colliery (including list of plant in nos. 1 and 2 pits), n.d.; a note of wagon leases, 1877; agreement to purchase Wynn Hall Colliery by R. T. Gillibrand, 1875; printed particulars of Ruabon Spelter Works, 1882; schedule of particulars of the Wynn Hall estate (including pits, wayleaves, etc.), 1948; etc. 1865 - 1948