Societies and Organisations is by far the largest in the archive. It documents, often very extensively, some 124 professional bodies, medical and educational charities, government advisory boards, industry organisations, research institutes and the like, to which Butterfield gave service over a period of almost fifty years, including the last year of his life. Only a small number of these bodies can be highlighted here. Professional bodies include the College of Teachers, the medical Royal Colleges and the BMA. Medical charities include Age Research/British Foundation for Age Research, British Diabetic Association, British Heart Foundation, Help the Aged, Save the Children (in respect of its Stop Polio Campaign) and Tommy's Campaign (for research into the causation and prevention of poor fetal growth, prematurity and stillbirth). He was associated with a large number of pharmaceutical companies during his career, for example, Beecham Group plc, Boots Company plc, Hoechst UK Ltd, Miles Laboratories Ltd, Upjohn Ltd, Warner Lambert Company and the Wellcome Foundation Ltd, and more generally British Insulin Manufacturers and the Association of the British Pharmaceutical Industry and its Animals in Medicine Information Centre. Government appointments included the Committee on Medical Aspects of Food Policy, the Council for the Education and Training of Health Visitors, the East Midlands Economic Planning Council, the Health Promotion Research Trust, and the Medicines Commission. Research Institutes include the Cambridge branch of the Ludwig Institute for Cancer Research (K. Sikora) and the William Harvey Research Institute (J.R. Vane). A number of topic folders were found in the alphabetical sequences of societies and organisations and have been retained with societies. These include 'Action Learning', which reflects Butterfield's interest in the work of R.W. Revans, and 'Aptitudes', which reflects his interest in surveying the skills and aptitudes of school leavers. Additionally Butterfields was a member of a number of dining and other clubs and ha a particularly long and well-documented association with the Medical Pilgrims.