Advert for Fry's Pure Concentrated Cocoa showing a young girl with her eyes open (the second image shows the young girl with her eyes closed)

    Licence: Attribution 4.0 International (CC BY 4.0)

    Credit: Advert for Fry's Pure Concentrated Cocoa showing a young girl with her eyes open (the second image shows the young girl with her eyes closed). Wellcome Collection. Source: Wellcome Collection.

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