| Description | General correspondence, chiefly between Dr Medvei and London School of Hygiene & Tropical Medicine investigators, Dr Reid and Ms Colwell, primarily relating to data collection. File includes: various datasets, reports from the investigated Civil Service departments including confidential report on post office operation on railway system, c. 1952, forwarded correspondence between Dr Medvei and the field investigators and a typescript account of the health and environmental conditions of the outdoor workers at Thetford Chase, Forestry Commission, 1953. |