M0006475: Wellcome Research Institution air raid precautions: reconstruction mezzanine floor

Date:
18 December 1939
Reference:
WT/D/1/20/1/54/55

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: M0006475: Wellcome Research Institution air raid precautions: reconstruction mezzanine floor. Source: Wellcome Collection.