A purple grid, with a denser red grid superimposed. Watercolour by M. Bishop, ca. 1970.
- Bishop, Mary, (Mary Cecil Hamilton), 1914-1990.
- Date:
- [ca. 1970?]
- Reference:
- 2897479i
Licence: In copyright
Credit: A purple grid, with a denser red grid superimposed. Watercolour by M. Bishop, ca. 1970. Source: Wellcome Collection.