Mostyn family, Barons Mostyn: Llandudno estates papers incl letter books and deeds 1803-1990 (Mostyn MSS)
Yorke family of Erddig (addnl): papers 1807-1973 (Erddig MSS)
Lucy M Jones of St Asaph: papers rel to HM Stanley and local history 20th cent
Stephen Barry Jones (b 1938), MP for East Flint: Parliamentary corresp and papers 1998-99 (1016)
Tudor Meirion Jones of Prestatyn: papers rel to his RAF service 1940-43
PS Richards of Wallasey: notes, maps and other papers rel to the Dee estuary, Deeside industry, Buckley brickworks and colleries and Point of Ayr colliery 20th cent
Jack Spraggon of Queensferry: war papers 1944-45 (1398)
Bennett & Sayer Ltd, engineers, Derby: corresp with Flintshire brick and clay manufacturers 1928-44
British Railways Board, London: corresp and papers rel to rent charge redemption on the Mold and Denbigh line 1970-77 (1392)