Two drovers walking with their packed mules through a forest at night. Line engraving by J. Couché after a design attributed to A. Allegri, il Correggio.

Licence: Public Domain Mark

Credit: Two drovers walking with their packed mules through a forest at night. Line engraving by J. Couché after a design attributed to A. Allegri, il Correggio. Wellcome Collection. Source: Wellcome Collection.