Friedrich Heinrich Alexander von Humboldt. Lithograph by R. Hoffmann, 1857, after Schwartz & Zschille.
- Reference:
- 4404i
Licence: Public Domain Mark
Credit: Friedrich Heinrich Alexander von Humboldt. Lithograph by R. Hoffmann, 1857, after Schwartz & Zschille. Wellcome Collection. Source: Wellcome Collection.
