A cow's udder with vaccinia pustules and human arms exhibiting both smallpox and cowpox pustules. Coloured engraving by J. Pass, 1811.

Date:
Published as the Act directs 1 May 1811
Reference:
20186i

Licence: Public Domain Mark

Credit: A cow's udder with vaccinia pustules and human arms exhibiting both smallpox and cowpox pustules. Coloured engraving by J. Pass, 1811. Wellcome Collection. Source: Wellcome Collection.

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