The Pain-killer Polka song, circa 1899.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: The Pain-killer Polka song, circa 1899. Wellcome Collection. Source: Wellcome Collection.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: The Pain-killer Polka song, circa 1899. Wellcome Collection. Source: Wellcome Collection.