Papers, 1967-1996, including correspondence, newspaper cuttings, plans and photographs of the memorial site of the Aberfan disaster, 1966. Included are letters from Dewi-Prys Thomas, Head of the Welsh School of Architecture at Cardiff, and his design.

Four volumes of minutes of meetings of the association, 1966-1967.

A copy of an address given by Huw Lewis AM, at the opening of the Aberfan exhibition at the National Library of Wales, 9 April 2005.

Papers of Professor J. N. Hutchinson, 1940-1996, comprising reports on the Aberfan tragedy including Geotechnical investigation into the causes and circumstances of the disater of 21st October, 1966 , by the donor and others, together with a very rare copy of Rubbish Tip slide, Cilfynydd Common 5 December 1939 (1940), and an offprint of an article by him and others entitled 'Rapid failures of colliery spoil heaps in the South Wales coalfield', Quarterly Journal of Engineering Geology, 1996.