People harvesting a field of corn: one of the harvesters appeals to a mounted overseer, who disregards his plea and indicates the work. Etching by G. Giampiccoli after M. Ricci.

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People harvesting a field of corn: one of the harvesters appeals to a mounted overseer, who disregards his plea and indicates the work. Etching by G. Giampiccoli after M. Ricci. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.