M0006469: Wellcome Research Institution air raid precautions: reconstruction of mezzanine floor

Date:
23 November 1939
Reference:
WT/D/1/20/1/54/48

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: M0006469: Wellcome Research Institution air raid precautions: reconstruction of mezzanine floor. Source: Wellcome Collection.