Papers and consultancy reports, 1961-1976, mainly relating to dams and disasters, including reports on the Tannur dam, Jordan, the Roxo dam, Portugal, and the proposed dam at Scammonden, Yorkshire; report on the Clarkston disaster, Glasgow, of 21 October 1971; numerous photographs of the Aberfan disaster, Glamorgan, 1966. Obituary of Nash in Quaker Work , 1985.