M0001644: Photograph of an ink polygraph by Dr James Mackenzie (1853-1925), British heart surgeon
- Date:
- 06 February 1931
- Reference:
- WT/D/1/20/1/15/39
Licence: In copyright
Credit: M0001644: Photograph of an ink polygraph by Dr James Mackenzie (1853-1925), British heart surgeon. Source: Wellcome Collection.
