Union O.S.E. (Union des Oeuvres de Secours aux Enfants et de Protection Sanitaire des Populations Juives)

Includes 'Association "OSE" in Israel' and 'British OSE Society (Organisation Sanitaria Ebraica)'

1954 correspondence includes requests to Chain to serve on the Scientific Council of Union O.S.E.

Later correspondence is mainly, with British OSE Society re meetings of the Executive Committee. Chain was an Honorary Vice-President until the organisation was absorbed by the Central British Fund for Jewish Relief and Rehabilitation in 1975