letter from Alfred Russel Wallace to Sharpey-Schafer
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: letter from Alfred Russel Wallace to Sharpey-Schafer. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: letter from Alfred Russel Wallace to Sharpey-Schafer. Wellcome Collection. Source: Wellcome Collection.