Deeds and documents, 1870-1907, concerning the estates of the Crewe-Read family of Llandinam Hall, Montgomeryshire.

Deeds and documents, 1676-1874, relating to properties in Llandinam, Llanidloes, Mochdre and Trefeglwys, Montgomeryshire, and to affairs of local government and Turnpike Trusts. The Woosnam material covers the period 1691-1844.

Papers of Mary Garbett Edwards, including scrapbooks containing family photographs and letters, [1890]-1973; Montgomeryshire Liberal Party, General Purposes Committee, minute book, 1950-1959; letters, 1929-1983; journals of visits to North America, 1936-1949; notebooks and notes for speeches, [20th century]; radio scripts and related material, 1943-1963; papers relating to Garbett Edwards, including eisteddfod essays and other papers, 1897-[1930s], journal of Canadian visits, 1936-1939, and publications and annual reports of the Mid Wales Industrial Development Association, 1957-1973.

Papers of Thomas Mervyn Jones, comprising his typescript memoirs which focus mainly on his academic career, his time in local government and as chairman of the Wales Gas Board, 1948-1970, and the Wales Tourist Board, 1970-1976, together with papers used by him in compiling them, including personal correspondence, reports, newspaper cuttings and other papers, and biographical material relating to his family, 1888-1985, as well as material relating to the history of Llandinam and the Davies family, and Jones's thoughts on various aspects of development in Wales, such as the nationalised industries and economic development, agriculture, the arts, government involvement in industry, and devolution.